Mini Red Velvet Bento Cake
This 4-inch red velvet bento cake is a tiny, cute take on classic red velvet layer cake, built for one or two people.
It bakes up tender with a gentle cocoa flavor and a bright red crumb, then gets stacked with tangy cream cheese frosting.
Why This Mini Cake Works
I keep coming back to this bento cake because it is all the fun of a layer cake without a huge commitment. The crumb is soft and velvety, with just enough cocoa to taste, and the cream cheese frosting is tangy and not overly sweet.
Because it is only 4 inches across, the layers cool fast and the frosting goes on quickly. You get a bakery-style mini cake in about an hour, no special pans needed.
Ingredients
- 1 cup all-purpose flour: spooned and leveled, not scooped
- 1 tablespoon unsweetened cocoa powder: natural or Dutch-process both work
- ½ teaspoon baking soda
- ¼ teaspoon fine sea salt
- ¼ cup unsalted butter, softened: let it sit at room temp for 30 minutes
- ½ cup granulated sugar
- 1 large egg, at room temperature: cold eggs can curdle the batter
- 1 tablespoon red gel food coloring: gel gives the brightest colour without thinning the batter
- 1 teaspoon vanilla extract
- ½ cup buttermilk, at room temperature: if you do not have any, stir 1½ teaspoons lemon juice into ½ cup whole milk and let it sit 5 minutes
- ½ teaspoon distilled white vinegar: the classic red velvet tang; do not skip it
For the cream cheese frosting
- 4 oz cream cheese, softened: full-fat block style, not spreadable tub
- 2 tablespoons unsalted butter, softened
- 1 cup powdered sugar, sifted: sift if it is lumpy
- ½ teaspoon vanilla extract
Variations and Substitutions
- No buttermilk: use the milk and lemon juice swap above, or stir 1½ teaspoons white vinegar into the milk.
- Gluten-free: replace the all-purpose flour with a 1-to-1 gluten-free flour blend that contains xanthan gum.
- Egg-free: I have not tested a flax egg here, but a commercial egg replacer designed for cakes works.
- Natural colour: swap the gel for 2 teaspoons beet powder whisked into the dry ingredients. The crumb will be a dusty pink, not bright red.
- Dairy-free frosting: use a block-style vegan cream cheese and stick margarine. The frosting may be a little softer, so chill it longer.
If you love mini cakes, try the tiny vanilla funfetti bento cake.
How to Make Red Velvet Bento Cake
Step 1: Mix the Dry Ingredients
Whisk the 1 cup flour, 1 tablespoon cocoa powder, ½ teaspoon baking soda, and ¼ teaspoon salt together in a small bowl.
The cocoa will tint the flour a pale brown, which is fine. Once the batter comes together it disappears under the red.
Step 2: Cream the Butter and Sugar
In a medium bowl, beat the ¼ cup softened butter and ½ cup sugar with a hand mixer on medium speed for about 2 minutes, until the mixture looks pale and fluffy. Scrape down the bowl, add the egg and beat another 30 seconds until fully incorporated.
Pour in the 1 tablespoon red gel food colouring and 1 teaspoon vanilla, then beat until no streaks of white remain. With the mixer on low, add the dry mixture in three additions, alternating with the ½ cup buttermilk in two additions, beginning and ending with the flour. When the last flour is barely visible, stir in the ½ teaspoon vinegar by hand, just a few folds until the batter is smooth.
The batter will be a vivid red and slightly thick, but it should pour easily off a spoon. Over-mixing after the vinegar can toughen the crumb, so stop as soon as the colour is even.
Step 3: Bake the Cake Layers
Preheat the oven to 350°F (175°C). Grease two 4-inch round cake pans and line the bottoms with parchment. Divide the batter evenly between the pans and smooth the tops with a small spatula.
Bake for 18 to 22 minutes, until a toothpick pushed into the centre comes out clean and the sides of the cake pull just slightly away from the pan. The tops will look set and barely spring back when pressed.
Let the cakes cool in their pans on a wire rack for 10 minutes, then turn them out onto the rack to cool completely. They cool fast; 20 minutes does it.
Step 4: Whip the Cream Cheese Frosting
In a clean bowl, beat the 4 oz softened cream cheese and 2 tablespoons butter on medium speed until smooth and no lumps remain, about 1 minute. Scrape the bowl, add the 1 cup sifted powdered sugar and ½ teaspoon vanilla, then beat on low until combined. Raise the speed to medium and whip for another 1 to 2 minutes, just until the frosting looks fluffy and holds a soft peak.
The frosting should be spreadable but not runny. If it feels too soft, chill it for 10 minutes before assembling.
Step 5: Assemble and Frost the Cake
Place one completely cooled cake layer on a small plate or cake board. Spread about 3 tablespoons of frosting over the top, all the way to the edges. Set the second layer on top, flat side up. Spread a very thin layer of frosting all over the top and sides, a crumb coat. Chill the cake for 15 minutes to set the crumb coat.
Once chilled, pile the remaining frosting on top and spread it down the sides with an offset spatula or butter knife. The petite size means you can get a smooth finish with just a few passes.
Step 6: Decorate and Serve
Fit a piping bag with a star tip, fill it with any leftover frosting, and pipe small rosettes around the top edge if you like. To finish, scatter a few red velvet cake crumbs or rainbow sprinkles over the top.
Slice into 4 wedges (or 2 generous slices) and serve right away while the frosting is soft.
Tips for the Prettiest Bento Cake
- Use gel food colouring, not liquid. Liquid dye can turn a 4-inch cake muddy because you need too much to get a true red.
- Chill the baked layers for 15 minutes after they cool. Firm layers are much easier to stack without tearing.
- An offset spatula makes smooth sides easier, but the back of a butter knife works just fine on a cake this small.
- Save the crumbs from levelling the tops. Dry them in the oven for a few minutes, crush them fine, and press onto the frosted sides for a clean, crumb-coated look.
- If you only have 6-inch pans, the batter fits one pan. Bake it 25 to 30 minutes, then slice the single layer in half horizontally once cooled.
Bake times by pan size:
| Pan size | Bake time | Notes |
|---|---|---|
| 4-inch (2 pans) | 18 to 22 minutes | Start checking at 18 minutes |
| 6-inch (1 pan) | 25 to 30 minutes | Slice into 2 layers |
| Cupcake tin | 15 to 18 minutes | Makes 4 to 5 cupcakes |
Keeping Your Mini Cake Fresh
- Refrigerate: the frosted cake in an airtight container for up to 3 days. The cream cheese frosting needs to stay cold.
- Serve cold or at room temp: I like the cake after 20 minutes out of the fridge, when the crumb softens and the frosting gets creamy again. Do not leave it out more than 2 hours.
- Freeze unfrosted layers: by wrapping them tightly in plastic and foil for up to 2 months. Thaw in the fridge, then frost and assemble.
What Goes Well With Red Velvet Bento Cake
A cold glass of milk is the obvious choice, the creaminess cuts the tang of the frosting. For coffee drinkers, a dark roast with no sugar balances the cake’s sweetness without competing with the cocoa note.
Frequently Asked Questions
Can I leave out the red food coloring?
Yes, the cake will taste the same but be a pale chocolate brown. It is essentially a cocoa buttermilk cake at that point.
Can I use a boxed red velvet cake mix?
Sure. Prepare the mix according to the package, then divide the batter between two 4-inch pans. Start checking for doneness a few minutes early, since small pans bake faster.
Why did my cake sink in the middle?
Sinking usually happens if the batter is over-mixed after adding the vinegar, or if the oven door is opened too soon. Bake until the toothpick comes out clean and the centre no longer jiggles.
Can I make the frosting ahead?
You can make it up to a day ahead and store it in the fridge. Bring it to cool room temperature and rewhip briefly with a spatula before using, so it spreads easily.
Mini Red Velvet Bento Cake Recipe
Ingredients
Method
- Whisk together flour, cocoa, baking soda, and salt in a small bowl.
- Beat butter and sugar 2 minutes until pale. Add egg, food coloring, and vanilla; beat until combined. On low, add dry mixture alternately with buttermilk in three additions, starting and ending with dry. Stir in vinegar by hand until just smooth.
- Preheat oven to 350°F (175°C). Grease two 4-inch round pans and line with parchment. Divide batter evenly between pans. Bake 18 to 22 minutes, until a toothpick comes out clean. Cool 10 minutes in pans, then turn onto a rack to cool completely.
- Beat cream cheese and butter until smooth. Add powdered sugar and vanilla, beat on low to combine, then whip on medium until fluffy, 1 to 2 minutes.
- Place one cake layer on a serving plate, spread about 3 tablespoons frosting on top. Add second layer. Apply a thin crumb coat all over, chill 15 minutes. Frost with remaining frosting, smoothing the sides.
- Pipe rosettes or a border if you like, scatter on sprinkles or crumbs, and serve.
