Single-Serving Bunny Bento Cake

This bunny bento cake is a tiny, single-serving vanilla cake frosted with pink buttercream and a sweet rabbit face. It bakes in a 4-inch pan so you get a whole cake to yourself, no layers to level or complicated piping required.

You can pull this off on a weeknight with just a couple bowls and a few basic decorating moves. The result is ridiculously cute and far less fussy than it looks.

What Makes This Tiny Bunny Cake So Fun

The cake itself is soft and moist, with a tight vanilla crumb that stays tender even after a day in the fridge. The buttercream is rich without being greasy, and you only need a small batch so it whips up by hand if you want.

Decorating is the best part. A swirl of pink frosting covers the top, then you press in candy eyes and pipe on a little nose and whiskers. The ears are the easiest shortcut: two store-bought cookies tucked in at an angle, no sculpting needed.

Ingredients

• ½ cup all-purpose flour: spooned and leveled, not scooped
• 3 tbsp granulated sugar
• ½ tsp baking powder
• ⅛ tsp salt
• 3 tbsp whole milk, at room temperature: 2% works in a pinch
• 1 ½ tbsp vegetable oil: or any neutral oil
• ½ tsp vanilla extract
• 1 large egg white, at room temperature: save the yolk for another use

For the buttercream and decoration

• ¼ cup unsalted butter, softened
• ½ cup powdered sugar
• 1-2 tsp milk
• ¼ tsp vanilla extract
• Pink gel food coloring: liquid works but you may need more
• 2 small round cookies: vanilla wafers or butter biscuits for ears
• 4 candy eyes: the tiny ones used for cake pops
• Black writing gel or melted chocolate: for whiskers and mouth

Variations / Substitutions

• Dairy-free: use oat milk and vegan butter, skip the cookies or use a vegan crisp.
• Chocolate cake: replace 1 tbsp flour with unsweetened cocoa powder.
• No candy eyes: pipe tiny dots of black gel or use mini chocolate chips.
• Different animal: swap pink for gray or brown, pipe a bear face, and use round cookies for ears.

If you want a full-size celebration cake, try our Classic Vanilla Layer Cake with buttercream.

How To Make Bunny Bento Cake

Step 1: Mix the Cake Batter

Heat your oven to 350°F (175°C). Grease a 4-inch round cake pan with butter and line the bottom with a small parchment circle. In a medium bowl, whisk the ½ cup flour, 3 tbsp sugar, ½ tsp baking powder, and ⅛ tsp salt until evenly combined.

Pour in the 3 tbsp milk, 1 ½ tbsp oil, ½ tsp vanilla, and the egg white. Stir with a whisk or spatula just until the batter is smooth and no dry streaks remain. It will be thin, that is exactly what you want.

Step 2: Bake the Cake

Scrape the batter into the prepared pan and smooth the top with the back of a spoon. Bake on the middle rack for 20 to 24 minutes, until the top springs back when you tap it lightly and a toothpick poked in the center comes out clean.

Let the cake cool in the pan for 10 minutes, then loosen the edges with a knife and turn it out onto a wire rack. Cool completely before you even think about frosting, warm cake melts buttercream into a puddle.

Step 3: Whip the Buttercream

While the cake cools, beat the ¼ cup softened butter in a medium bowl with a hand mixer or a sturdy spatula until it looks pale and fluffy. Sift in the ½ cup powdered sugar, add ¼ tsp vanilla, and 1 tsp milk, then beat until smooth.

Add a tiny drop of pink gel food coloring and mix it in fully. If the buttercream feels stiff, beat in another teaspoon of milk. If it is too loose, add a spoonful of powdered sugar. You want a spreadable consistency that still holds its shape.

Step 4: Frost the Cake

Once the cake is completely cool, set it on a small plate or cake board. Pile the pink buttercream on top and spread it across the surface and down the sides with an offset spatula or butter knife.

Smooth it as neatly as you can, but a few swirls and texture marks look charming and homemade. Wipe the spatula and clean up the plate edges so the final photo is tidy.

Step 5: Create the Bunny Face

Press two candy eyes onto the top third of the cake, leaving room between them. Push the two cookies into the top edge behind the eyes so they stand up as ears; if they slide, dab a bit of extra buttercream onto the back before inserting.

Pipe a tiny pink oval nose with leftover buttercream, or use a dab of writing gel. With black writing gel or melted chocolate, draw two short whiskers on each side and a little curved mouth underneath. Serve as soon as the face is set, or chill for a cleaner slice.

A Few Notes Before You Start

• Cookies as ears: pick thin, crisp cookies. Thick soft ones tend to droop. If you want a 100% edible ear, pipe melted white chocolate on parchment, let it set, then stick them in.
• Smooth frosting trick: dip your offset spatula in hot water, wipe it dry, then run it over the buttercream for a sleek finish.
• Room temperature ingredients: take the egg white and milk out 30 minutes ahead so the batter blends without lumps.
• Leftover buttercream: it keeps in the fridge for a week, spread it on sugar cookies or a warm muffin.

If you want to bake a larger bunny cake, scale the recipe like this:

Storing Your Bento Cake

Refrigerate: keep the decorated cake in an airtight container in the fridge for up to 3 days. Let it sit at room temperature for 20 minutes before eating so the buttercream softens up.

Frequently Asked Questions

Can I make the cake a day ahead?

Yes. Bake it, wrap the cooled cake tightly in plastic, and leave it on the counter overnight. Frost and decorate the next day.

What if I don’t have a 4-inch pan?

You can use a standard muffin tin. Divide the batter between two greased wells and reduce the bake time to 13-16 minutes. Stack them with a little buttercream in the middle for a taller cake.

How do I pipe whiskers without a piping bag?

Spoon the black gel into a small zip-top bag, snip just the very tip off a corner, and pipe slowly.

My cake stuck to the pan. What went wrong?

The pan likely needed more grease or a parchment round on the bottom. Next time, butter the pan well and trace a circle of parchment to fit exactly.

Can I use pre-made frosting?

You can. A thick canned vanilla frosting works, just beat it with a little extra butter for a fluffier bite.

Bunny Bento Cake Recipe

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 24 minutes mins

Total Time 44 minutes mins

Servings: 1 servings

Calories: 862

Ingredients Method Notes

Ingredients

  

• ½ cup all-purpose flour
• 3 tbsp granulated sugar
• ½ tsp baking powder
• ⅛ tsp salt
• 3 tbsp whole milk, at room temperature
• 1 ½ tbsp vegetable oil
• ½ tsp vanilla extract
• 1 large egg white, at room temperature
• ¼ cup unsalted butter, softened
• ½ cup powdered sugar
• 1-2 tsp milk
• ¼ tsp vanilla extract
• Pink gel food coloring
• 2 small round cookies
• 4 candy eyes
• Black writing gel or melted chocolate

Method

 

1. Heat oven to 350°F (175°C). Grease a 4-inch round pan and line the bottom with parchment.
2. Whisk the flour, sugar, baking powder, and salt. Add milk, oil, vanilla, and egg white, stir until smooth.
3. Pour batter into the pan and bake 20-24 minutes until a toothpick comes out clean. Cool 10 minutes in the pan, then transfer to a rack to cool completely.
4. Beat the butter until pale, then beat in powdered sugar, 1 tsp milk, and vanilla. Tint pink with food coloring, adding extra milk if needed for spreadability.
5. Spread the pink buttercream on the cooled cake. Press candy eyes and two cookies in for ears.
6. Pipe a pink nose and draw whiskers and a mouth with black gel. Serve or chill.

Notes

Cool the cake fully before frosting or the buttercream will slide off. If the cookies are soft, toast them in a 300°F oven for 5 minutes and let them crisp up before using as ears.