- Brownie boxes are shallow, sturdy paperboard or corrugated cartons built to hold dense fudge squares, blondies, mini bites and 8 × 8 slabs flat.
- CubitPack makes custom brownie boxes from 1,000 units in 10–14 business days, with a 4–5 business day rush option.
- Food-contact boards and grease-resistant barriers are available on request through certified partner facilities.
- Design help, custom grid divider dielines, dies, plates and shipping to all 50 US states are free; you approve a 3D mockup before paying.
Custom Brownie Boxes
Custom brownie boxes sized for single 3-inch fudge squares, 4-pack and 6-pack brownie flights, 24-piece mini bite trays and whole 8 × 8 inch slabs. Order from 1,000 boxes, produced in 10–14 business days with 4–5 day rush. Free design help, no die or plate charges, free shipping across all 50 US states, and food-contact grease-resistant materials on request come standard.
What are custom brownie boxes?
Custom brownie boxes are low-profile printed paperboard cartons, window boxes, tray-and-sleeve sliders and corrugated mailers engineered around dense fudge brownies, blondies, brookies and ganache bars. Unlike tall cake or cupcake cartons, brownie boxes use a shallow 1.75 to 2.5 inch ceiling height that keeps heavy chocolate squares flat, prevents frosted toppings from sliding during delivery, and locks in moisture so fudgy centers never dry out. Bakeries, coffee roasters and nationwide mail-order brownie brands choose between top-window tuck boxes for counter display, compartmented 4-cell and 6-cell divider trays for flavor flights, and reinforced 8.5 × 8.5 inch slab boxes for whole gift pans. At CubitPack, custom brownie boxes start at 1,000 units and take 10–14 business days to make, with a 4–5 business day rush option. Food-contact boards and cocoa-butter grease barriers are available on request, and every order includes free design help, zero die or plate charges, and free shipping to all 50 US states.
Brownie boxes facts
- Minimum
- 1,000 boxes
- Turnaround
- 10–14 business days
- Rush
- 4–5 business days, quoted
- Styles
- Window box, tray & sleeve, auto-lock slab, mailer, single tuck, gable
- Materials
- Kraft board, white card, E-flute corrugated, recycled
- Food contact
- Food-contact board & grease barriers on request
- Dividers & add-ons
- 4, 6 & 12-cell card grids, clear windows, ribbons, butter paper
- Proofing
- Free digital dieline proof + 3D mockup before payment
- Shipping
- Free to all 50 US states
Which brownie box style fits my bakery or mail-order line?
| Box style | Best for | Window option | Base strength | Divider fit |
|---|---|---|---|---|
| Window bakery box | 4-pack, 6-pack and 12-pack counter brownie assortments | Built-in top window | One-piece solid floor or tuck | Fits 4, 6 or 12-cell grid |
| Tray and sleeve (drawer) | Gourmet brownie flights, mini bites and holiday gifts | Optional sleeve cutout | Double-wall folded tray | Ideal for cell dividers |
| Auto lock bottom slab box | Heavy 8 × 8 in whole brownie slabs and dozen boxes (1.5–3 lb) | Optional top window | Pre-glued locking base | Holds whole slab or 9-grid |
| Corrugated mailer box | Nationwide DTC mail-order brownie gifts and subscriptions | Closed for parcel transit | Crush-resistant E-flute | Pairs with tray + butter paper |
| Straight tuck end carton | Individual 3 × 3 in or 4 × 4 in café brownie & blondie squares | Optional front window | Compact tuck base | Single-square fit |
| Gable carry box | Market bundles, picnic packs and catering brownie assortments | Optional front window | Auto-lock or tuck base | Holds stacked wrapped bars |
Not sure which style fits?
Request a Quote →What size custom brownie box do I need?
Commercial bakeries usually cut brownies into 3 × 3 inch squares, 4 × 4 inch café slabs or 1.5 × 1.5 inch mini bites. Use these benchmark inside dimensions (Length × Width × Height) or give us your pan or square measurements. Whether you are comparing brownie packaging boxes, printed brownie boxes with window, individual brownie boxes, kraft brownie boxes or brownie boxes with logo, we size the template to your exact container.
| Inside size (in) | Typically fits | Popular style |
|---|---|---|
| 3.5 × 3.5 × 1.75 in | Single 3 × 3 in gourmet brownie, blondie or wedding favor square | Straight tuck end with window or tray & sleeve |
| 4.25 × 4.25 × 2.0 in | Single oversized 4 × 4 in café brookie or frosted ganache brownie | Window box or clamshell tuck carton |
| 6.5 × 6.5 × 2.0 in | 4-pack brownie flight (2 × 2 grid of 3 in squares with divider) | Window bakery box or tray and sleeve |
| 9.5 × 6.5 × 2.0 in | 6-pack brownie assortment (2 × 3 grid) or 24 mini 1.5 in brownie bites | Tray and sleeve, window box or E-flute mailer |
| 8.5 × 8.5 × 2.25 in | Whole 8 × 8 in uncut brownie slab or 9-square grid (3 × 3 of 2.6 in cuts) | Auto lock bottom slab box or corrugated mailer |
| 12.5 × 9.5 × 2.5 in | Dozen brownie platter (12 × 3 in squares in a 3 × 4 grid) | Reinforced auto lock bottom or E-flute tray box |
Suggested inside size: 3.5 × 3.5 × 1.75 in
A starting point. Your account manager confirms the size with you before the proof.
Quote this size →Know your product's size? Work out the inside box size with our free box size calculator.
Have your inside dimensions ready? Request pricing across up to 3 quantities.
Request a Quote →How do I choose brownie boxes?
- Measure your square cut & heightKeep box height between 1.75 and 2.5 inches so dense squares cannot flip over onto their frosted tops.
- Pick counter window vs DTC mailerChoose clear window paperboard cartons for bakery cases, or E-flute corrugated mailers for nationwide parcel shipping.
- Add food-contact & grease barriersRequest a grease-resistant inner liner on your quote or pair the box with custom printed butter paper.
- Include a flavor-flight dividerAdd a 4-cell, 6-cell or 12-cell card grid so salted caramel, walnut and peanut-butter squares stay separate.
- Print reheating tips inside the lidUse inside lid printing for 'Warm for 12 seconds' tips and a visual map of your brownie flavors.
- Approve your 3D proof before payingWe build your custom box and grid divider dielines plus a 3D mockup free before payment.
What are brownie boxes made of?
Which finishes can brownie boxes have?
Which add-ons can I get?
Brownie boxes specifications
| Spec | Options |
|---|---|
| Box styles | Window tuck box, tray and sleeve drawer, auto-lock slab box, E-flute mailer, single tuck, gable |
| Board thickness | Card (paperboard), recycled/kraft board, corrugated or rigid board matched to product weight |
| Food-contact & grease barrier | Food-safe boards, grease-resistant liners and low-migration inks on request |
| Printing | Full-color CMYK, Pantone (PMS) color matching, inside lid printing, white ink on kraft |
| Lamination & finishes | Matte, gloss, soft-touch lamination; foil stamping, embossing, debossing, spot UV |
| Window film | Clear die-cut window patching; film material and thickness |
| Grid dividers | Custom 2, 4, 6, 9, 12 and 24-cell interlocking paperboard partitions |
| Size range | Made to any square, flight or slab dimension; minimum and maximum limits |
| Minimum order | From 1,000 boxes; delivered within ±5% of ordered quantity |
| Proofing & samples | Free digital dieline proof and 3D mockup before payment; paid printed sample credited to order |
| Turnaround | 10–14 business days after proof approval and payment; rush in 4–5 business days |
| Shipping | Free shipping across all 50 US states; flat-packed delivery |
Ready to quote your brownie boxes? Compare up to 3 quantities with a free 3D mockup.
Request a Quote →What do bakeries and mail-order brands pack in custom brownie boxes?
Brownies are denser, richer in butter and lower in profile than almost any other bakery item. We engineer the carton height, base support and internal grid around how you cut, pack and sell your bars at the counter or online.
Brownie boxes design ideas
Example designs with made-up brands. Your packaging is made to your design.
What are the most common custom brownie box mistakes?
Dense, butter-rich fudge squares and heavy 8 × 8 slabs need different proportions than airy pastries or cupcakes. Avoid these five mistakes. When specifying branded brownie boxes, wholesale brownie boxes, bulk custom brownie boxes, personalized brownie boxes and custom size brownie boxes, avoid these common production mistakes
- Packing 1.5-inch-tall brownies inside a 4-inch-tall cake box where excess headspace dries out the crumb and lets squares flip upside down.
- Placing unwrapped fudge brownies or blondies directly onto unlined paperboard without requesting a grease-resistant inner barrier or butter-paper sheet.
- Packing sticky salted-caramel, ganache and walnut brownies side by side without an interlocking card grid divider to stop toppings from smearing.
- Using an unglued reverse-tuck bottom for a heavy 2-pound 8 × 8 brownie slab instead of a pre-glued auto-lock base or E-flute mailer.
- Shipping a thin film-window bakery box through UPS or USPS parcel post without an outer corrugated mailer, allowing other packages to puncture the window.
Chat with a designer now
Share your logo, a sketch or an AI image. We'll rebuild every element cleanly onto your box dieline and send a 3D mockup, free.
Made your design with AI?
Generated a concept in Google Gemini, ChatGPT, Claude or Midjourney? Send us your AI image: we rebuild every element onto your box dieline and show you a 3D mockup before you pay, free.Custom vs stock brownie boxes: which is better?
| Stock (plain) | Custom from CubitPack | |
|---|---|---|
| Ceiling height | Tall 4-to-5 inch cake boxes where flat brownies slide and flip over | Shallow 1.75-to-2.5 inch profile that keeps fudge squares flat and moist |
| Grease protection | Unlined board that absorbs cocoa butter and shows dark oil spots | Food-safe grease-resistant inner liners on request + custom butter paper |
| Flavor separation | Open floor where sticky caramel and frosted bars smear together | Custom 4, 6, 9 or 12-cell interlocking card grid dividers |
| Brand & allergen info | Hand-applied stickers on plain kraft or white cartons | Logo, flavor map, warming tips and allergen icons printed inside and out |
| Dielines & proofs | Fixed sizes that leave gaps around 3-inch cuts | Free custom dieline, design help and 3D mockup before payment |
Get custom brownie boxes sized to your product, with a free 3D mockup before you pay.
Request a Quote →Are brownie boxes safe and sustainable?
Food-safe & grease-resistant on request
When your brownies touch the carton or divider directly, request food-contact board and a grease-resistant inner barrier made in a certified partner facility.FDA allergen & net weight layout
Packaged retail brownies require net weight (oz / g), ingredient lists and major allergen callouts (wheat, egg, milk, soy, nuts). We format your back and bottom panels cleanly.FSC paperboard & recycled outer sleeves
FSC-sourced paperboards, natural unbleached kraft and ISO 9001 partner production are available on request.How do I order custom brownie boxes?
Tell us what you need
Size, quantities or AI conceptCompare volume pricing
Dedicated account managerApprove your proof
Digital proof + 3D mockupMade and shipped
Free to all 50 statesWhat affects the price of custom brownie boxes?
The price depends on four things, and every custom quote is free.
Footprint & board type
Single 3.5-inch tuck boxes cost less per unit than 8.5-inch E-flute slab mailersOrder quantity
Ordering 2,500 or 5,000 boxes lowers the per-box cost significantly vs 1,000Dividers & windows
Interlocking 4-to-12 cell card grids and clear window patching add a componentGrease barrier & foil
Food-contact grease liners and metallic gold or copper foil add finishing stepsTo keep packaging costs low across seasons, order your main 4-pack or 6-pack brownie box in a year-round design, then add custom printed belly-band sleeves for Valentine's Day, Mother's Day and Christmas. First orders get 10% off, and we beat written US competitor quotes for identical specs. Buyers ordering single 3 × 3 in brownie boxes can compare up to three quantities in one quote.
10% off your first order.
Request a Quote →What do I need to send for a quote?
- The product and how many you need
- The inside size, or what goes in it
- A style, or ask us to suggest one
- Your logo or artwork (an AI image is fine)
- Pantone codes, if you have them
- Delivery ZIP code and the date you need it
Can I see a sample first?
Sample kit
Board and finish swatches, sample boxes, labels and bags. Credited to your first order.Digital proof + 3D mockup
See it before you payPrinted sample
Of your own designHow does shipping work?
- Free shipping to all 50 states
- Worldwide with DDP prices: duties and taxes included
- Blind and split shipping
- Damaged in transit? We reprint the damaged units free
Why brands choose CubitPack
Dedicated specialist
One account manager from quote to deliveryPantone guaranteed
Clearly off? We reprintReprint or refund
If we get it wrong, you chooseBBB accredited
A US business you can checkBrownie boxes questions
What size box fits 4, 6 or 12 standard 3 × 3 inch brownies?
If you cut your sheet pans into 3 × 3 inch squares, a 4-pack (2 × 2 grid) fits a 6.5 × 6.5 × 2.0 inch box, a 6-pack (2 × 3 grid) fits a 9.5 × 6.5 × 2.0 inch box, and a 12-pack (3 × 4 grid) fits a 12.5 × 9.5 × 2.5 inch box. The extra half inch on Length and Width gives you room for finger access or a paperboard divider.
Why should custom brownie boxes be 1.75 to 2.5 inches tall instead of 4 inches tall?
Most brownies, blondies and bars are baked 1.25 to 1.65 inches thick. Packing them in a standard 4-inch-tall bakery box leaves 2.5 inches of empty headspace that dries out the fudgy crumb and lets squares flip upside down during delivery. A shallow 1.75 to 2.25 inch ceiling keeps every bar flat.
Are your custom brownie boxes food-safe and grease-resistant?
Food-safe materials and internal grease-resistant barriers are available on request. Because fudge brownies and blondies are rich in cocoa butter and dairy butter, tell us on your quote if unwrapped bars touch the board directly so we can specify a grease-resistant inner liner or pair your box with custom butter paper.
Can you make interlocking grid dividers for 4-pack, 6-pack and mini-bite brownie flights?
Yes. When you pack salted caramel, peanut-butter swirl, espresso and walnut brownies in the same box, an interlocking paperboard grid divider keeps soft ganache toppings from smearing onto neighboring squares and stops flavors from mingling.
Which box style is strongest for shipping brownies nationwide in the mail?
For DTC mail-order brownies, we recommend an E-flute corrugated mailer box (such as 6.5 × 6.5 × 2.0 in or 8.5 × 8.5 × 2.25 in) without a clear film window, paired with a snug inner paperboard tray or custom printed butter paper wrap to lock in freshness during 2-day parcel transit.
Can I add a clear window to show off glossy crinkle-top brownies at the counter?
Yes. Window patching is our most popular option for retail bakery cases and coffee shops. We die-cut a square, rectangular or custom-shaped window in the top lid or outer slide sleeve and patch it with clear film at zero extra die cost.
How do you support the weight of a whole 8 × 8 inch fudge brownie slab?
An uncut 8 × 8 inch pan of dense fudge brownies weighs 1.5 to 2.25 pounds - much heavier than an 8-inch sponge cake of the same footprint. Use a pre-glued auto-lock bottom carton, a double-wall tray-and-sleeve box or an E-flute corrugated mailer so the floor never sags.
Can I print a flavor guide and microwave warming instructions inside the lid?
Yes. Choosing Outside + inside printing lets you print an illustrated 4-square or 6-square flavor map right inside the top lid alongside warming tips ('Microwave 10–12 seconds for a warm molten center') and allergen callouts.
What is the minimum order and turnaround time for custom brownie boxes?
Custom brownie boxes start at 1,000 units. Standard production takes 10–14 business days after you approve your proof and pay, with a 4–5 business day rush option available. Free shipping is included to all 50 US states.
Can I see a digital proof or physical sample before ordering my brownie boxes?
Yes. Every order includes a free flat dieline proof and a 3D mockup of your box and divider before you pay. You can also order our $50 sample kit to check boards and finishes, or request a paid custom prototype credited back toward your full order.
Still have a question? Ask a packaging specialist.
Request a Quote →Brownie boxes terms, explained
- Shallow slab profile
- A low 1.75–2.5 in box height engineered so flat brownie squares cannot flip or dry out
- Grease-resistant barrier
- An internal food-contact coating or liner available on request that stops cocoa butter from staining board
- Interlocking cell divider
- Slotted paperboard partitions that form a 4, 6, 9, 12 or 24-square grid for brownie flights
- Tray and sleeve box
- A rigid-walled folding tray that slides inside an outer printed or windowed sleeve
- Auto lock bottom
- A pre-glued carton base that locks shut to hold heavy 1.5–2.5 lb brownie slabs
- E-flute corrugated
- Fine, crush-resistant fluted board used for nationwide mail-order brownie shipping boxes
More for your food packaging
Learn more
Get your brownie boxes price
One dedicated account manager prepares pricing across up to 3 quantities.
- Free design & AI-to-print studio + 3D mockup
- No die or plate charges · 4–5 day rush available
- Free shipping to all 50 states
- 10% off your first order
- Reprint or refund if we get it wrong
All CubitPack facts on this page (1,000-box minimum, turnaround times, food-safe materials on request via certified partner facilities, finishes and free services) come from our published product specifications and were verified by a packaging specialist before publication. Pan and square sizes are standard bakery benchmarks confirmed before proofing. Spot something wrong? Tell us and we will fix it. Tell us if something looks wrong.
Sources
- CubitPack minimums (1,000 boxes), turnaround, food-safe materials on request in certified partner facility, free design help, no die/plate charges, free 50-state shipping, Pantone guarantee, $50 sample kit
- FDA packaged bakery net weight and major food allergen disclosure rules
- TAPPI paperboard caliper, stiffness, and grease/moisture barrier testing methods
What changed
- October 22, 2026: First published.
- October 22, 2026: Updated specifications, terminology, and verified source links.