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Three-layered vanilla bento cake with strawberry filling.

Mini Bento cake


  • Author: Chef Clara
  • Total Time: 35 minutes
  • Yield: 1 mini cake (3-4 inches) 1x

Description

Bento cakes, also known as lunchbox cakes, are adorable, single-serving cakes that are perfect for gifting or personal indulgence. These mini cakes are trendy, customizable, and ideal for celebrations. Made with soft sponge layers and frosted with light buttercream, they are packed in small takeout boxes, making them cute and convenient!


Ingredients

Scale

For the Cake:

  • 1 cup (120g) all-purpose flour
  • ½ cup (100g) granulated sugar
  • ½ tsp baking powder
  • ¼ tsp baking soda
  • ¼ tsp salt
  • ½ cup (120ml) whole milk
  • ¼ cup (60ml) vegetable oil
  • 1 tsp vanilla extract
  • 1 large egg

For the Buttercream Frosting:

  • ½ cup (113g) unsalted butter, softened
  • 1 ½ cups (180g) powdered sugar
  • 12 tbsp heavy cream or milk
  • ½ tsp vanilla extract
  • Gel food coloring (optional)

Instructions

Make the Cake:

  1. Preheat the oven to 325°F (165°C). Grease and line a small cake pan (6-inch round or square).
  2. In a bowl, whisk together flour, baking powder, baking soda, and salt.
  3. In a separate bowl, whisk the sugar, milk, oil, vanilla, and egg until well combined.
  4. Gradually add the dry ingredients to the wet mixture, stirring until just combined. Do not overmix.
  5. Pour the batter into the prepared pan and bake for 18-22 minutes, or until a toothpick inserted in the center comes out clean.
  6. Let the cake cool completely before slicing into small rounds (about 3-4 inches in diameter).

Make the Buttercream Frosting:

  1. Beat the softened butter until creamy and smooth.
  2. Gradually add powdered sugar and continue beating until fluffy.
  3. Add vanilla extract and 1 tbsp of milk or cream, beating until smooth. Add more milk if needed for desired consistency.
  4. If using food coloring, divide the frosting and mix in colors as desired.

Assemble the Bento Cake:

  1. Place a cake round on a flat surface and spread a thin layer of frosting.
  2. Stack another cake layer and frost the top and sides evenly.
  3. Smooth the buttercream using an offset spatula or piping bag for a clean finish.
  4. Decorate with sprinkles, piped designs, or edible decorations.
  5. Place the mini cake in a small takeout box lined with parchment paper.
  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Category: Dessert
  • Cuisine: Korean-inspired