Number Cake: Molds, Templates, Complete Kits, and Equipment to Succeed with Your Number-Shaped Cake
What is a number cake?
The number cake (or number-shaped cake) is a pastry creation made of two or three layers of sponge cake, biscuit, or shortcrust pastry cut into number shapes, filled with piped cream, and decorated with fresh fruit, edible flowers, meringues, or macarons. Now essential for birthdays, weddings, and themed parties, it combines visual impact and maximum personalization (1 number = 1 age, 2 numbers = ages, dates, or messages).
Success depends on three technical elements: clean number cutting, firm and pipeable cream, and balanced decoration. Patissland offers all the equipment to master these three steps.
Essential equipment
| Equipment | Function | Standard size |
|---|---|---|
| Silicone number molds | Direct baking of the biscuit in shape | Numbers 0 to 9, 25 to 35 cm |
| Cardboard number templates | Knife cutting of the baked sponge cake | A3 and A4, disposable |
| Rectangular frames | Baking the flat sponge cake to be cut | 30x40 cm, 35x45 cm |
| Complete number cake kits | All elements combined (molds + supports) | Multiple number sets |
| Nozzles & piping bags | Even piping of cream between layers | 1M, 2D, 1B (Wilton standard) |
| Rectangular supports | Cake presentation and transport | Cake boards minimum 35x45 cm |
Production techniques
Method 1: Silicone number mold
The fastest for event pastry chefs. The biscuit is baked directly in the shape of the number in a dedicated silicone mold. Advantage: clean unmolding, sharp shapes, time-saving. Disadvantage: one mold per number to acquire, storage space needed if all numbers are required.
Method 2: Cardboard template + flat sponge cake
The most versatile for production pastry. Baking a large rectangular sponge cake sheet, then cutting the number with a knife using a cardboard template. Advantage: only one template per number (inexpensive), total versatility (all sizes, all shapes). Disadvantage: cutting technique must be mastered for clean edges.
Method 3: Rectangular frame + cutting
Variation of method 2, using a rectangular pastry frame to bake a perfectly even sponge before cutting. Ideal for multi-layer number cakes where thickness uniformity is critical. To discover the full frames, see our collection Pastry Rings & Frames.
Sponge recipe for number cake
The number cake sponge must be firm (to hold a clean cut) but soft (to remain pleasant to eat). Proven basic recipe for a 25-30 cm single-digit number cake:
- 4 whole eggs
- 120 g granulated sugar
- 120 g T45 flour
- 1 packet baking powder (or 5 g baking soda if acidic recipe, see our Food Additives)
- 1 tablespoon neutral oil (adds softness)
Baking: 180°C for 12 to 15 minutes for a 30x40 cm rectangular tray. Let cool completely before cutting (warm sponge = failed cut).
Recipe variations: chocolate, strawberry, red fruits
Chocolate number cake: replace 30 g of flour with 30 g of unsweetened cocoa powder. Dark chocolate whipped ganache filling.
Strawberry number cake: classic sponge, mascarpone whipped cream filling, decorated with whole and halved fresh strawberries.
Red fruit number cake: vanilla diplomat cream filling, decorated with raspberries, blackberries, blueberries, currants.
Speculoos number cake: classic sponge, speculoos whipped cream filling, decorated with crumbled and whole speculoos cookies.
Cream piping: technique and tips
Piping is the visual signature of the number cake. The cream is piped in small regular rosettes over the entire surface of the number, between the two layers of sponge cake and on top.
Which tip for piping?
- Wilton 1M (16 mm open star): the most used, generous rosettes
- Wilton 2D (closed star): more structured and sharp rosettes
- Wilton 1B (large open star): XXL rosettes for large pieces
- Saint-Honoré (V tip): more sophisticated effect, wave piping
To explore the full range, see our collection Wilton Tips and Tips & Piping Bags.
Which cream for piping?
Three proven options:
- Mascarpone whipped cream: the most common, firm and stable for several hours
- White chocolate whipped ganache: very firm, ideal for hot weather or transport
- Diplomat cream: pastry cream + whipped cream, rich and stable
Practical tips
How to cleanly cut the sponge cake using the template
Place the number template on the completely cooled sponge cake (ideally chilled 30 min in the freezer for firmness). Use a long, thin blade knife dipped in hot water and wiped between each cut. Cut in a single continuous pass, without sawing. For the rounded parts of the number (0, 6, 8, 9), rotate the blade following the template contour. The scraps can be recycled into cake pops.
How long before serving can a number cake be assembled
The number cake is ideally prepared 3 to 6 hours before serving, kept chilled. Beyond 8 hours, classic whipped cream loses firmness. With a whipped ganache or a mascarpone whipped cream, you can hold 12 to 24 hours without visual loss. Place fresh fruits and edible flowers at the last moment to preserve their freshness.
Transporting a number cake without damage
Three precautions: (1) use a rigid support (cake board cardboard at least 12 mm) 5 cm wider than the number, (2) refrigerate for 1 hour before transport for maximum cream firmness, (3) provide a non-slip mat in the trunk. Place the fruits and flowers on site upon arrival rather than during transport. For suitable supports, see our collection Cake Supports & Displays.
How many people for a number cake
Estimate per number (standard size 25-30 cm, two-layer sponge cake):
- 1 number: 8 to 12 people
- 2 numbers side by side: 16 to 22 people
- 3 numbers side by side: 24 to 32 people
For larger portions, count 1 number for 6-8 people. For small treats, 1 number is enough for 14-16 people.
Frequently Asked Questions
Silicone mold or cardboard template: which option to start with
For a single occasional number cake, the cardboard template is more economical (low initial cost, adjustable according to the current number). For event pastry chefs who regularly make number cakes, investing in a series of silicone molds quickly pays off (time-saving, perfect shapes, clean release). Many professional pastry chefs have both to combine flexibility and productivity.
What size number cake for which event
Child's birthday: 1 number 25 cm (8-12 people).
Intimate adult birthday: 2 numbers 25-30 cm (16-22 people).
Family birthday: 2 numbers 30-35 cm (20-28 people).
Wedding / major event: 2-4 numbers 30-40 cm in decorative alignment (32+ people), often complemented by cupcakes or tiered cakes.
Can you make a number cake with shortcrust pastry
Yes, it is even the original version of the number cake as imagined by pastry chef Adi Klinghofer. The shortcrust pastry provides a crispy texture contrast with the creamy filling. Typical recipe: hazelnut or vanilla sweet dough, blind baking for 12 minutes at 170°C, complete cooling before assembly. Harder to cut than sponge cake but results in a more refined taste.
How to decorate a number cake
Three main decoration categories:
- Fresh fruits: whole strawberries, raspberries, blueberries, red currants, sliced kiwi, mango (the most common and photogenic)
- Confectionery: mini meringues, macarons, marshmallows, chocolate pearls, melting chocolates
- Plant-based decorations: dried edible flowers, fresh mint sprigs, rose petals
Ideally mix the 3 categories for a balanced result. See also our collection Floral Decoration.
Number cake vs gâteau chiffre: difference?
None. "Number cake" and "gâteau chiffre" refer to exactly the same creation. "Number cake" is the original English term, "gâteau chiffre" is its French translation. Both terms are perfectly interchangeable within the French pastry community.
Are there all-in-one number cake kits
Yes, several brands offer complete kits including templates or silicone molds (numbers 0 to 9), rectangular bases, piping nozzles, and sometimes step-by-step recipes. Ideal for starting with number cakes without having to buy each item separately. More economical than buying pieces individually in the long run.
Can you make a number cake with letters (letter cake)
Yes, the letter cake follows exactly the same technique as the number cake, but replaces numbers with letters. It allows you to write first names, short messages (LOVE, MAMA, THANK YOU, BABY), or initials. Discover our complete collection dedicated to templates and molds Letters & Numbers.
The Patissland team, partner of demanding pastry chefs.
