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Lunch Box Cake Recipe

4.5 from 135 reviews

Lunch Box Cake is a delightful mini layered cake made with Devil’s Food cake and a vibrant, smooth buttercream frosting. This recipe combines a moist chocolate cake base with a colorful, sweet buttercream, perfect for fun individual servings. The process involves baking a thin sheet cake, cutting it into small rounds, layering each with rich buttercream, and finishing with a crumb coat and a decorated final frosting layer, ideal for lunchbox treats or charming desserts.

Ingredients

Scale

For the Cake

  • 15 to 25 ounces Devil’s Food cake mix
  • 1 cup water
  • ½ cup vegetable oil
  • 3 large eggs, room temperature

For the Buttercream Frosting

  • 1½ cups salted sweet cream butter, softened
  • 1 teaspoon clear vanilla flavoring
  • ½ teaspoon almond extract
  • 4 cups powdered sugar
  • 2 to 3 tablespoons heavy cream
  • 3 to 5 drops food color gel (fuchsia)
  • Colorful sprinkles (optional garnish)

Instructions

  1. Preheat and Prepare Pan: Preheat the oven to 350°F. Line a ½ sheet cake pan with parchment paper and spray it with nonstick cooking spray. Set aside.
  2. Mix Cake Batter: In a medium bowl, combine the Devil’s Food cake mix, water, vegetable oil, and eggs. Use a handheld mixer on medium speed to blend ingredients until smooth and fully incorporated.
  3. Bake Cake: Spread the batter evenly into the prepared pan. Bake for 15-18 minutes or until a toothpick inserted into the center comes out clean.
  4. Release Cake from Pan: Run a knife gently around the edges to loosen the cake from the pan.
  5. Cool Cake Upside Down: Spray a piece of parchment paper with nonstick spray, place it sprayed side down on the cake. Place a cooling rack on top and carefully flip the whole setup so the cake is upside down on the rack. Allow to cool completely.
  6. Cut Cake Circles: Use a 3½-inch round cookie or biscuit cutter to cut 12 circles from the cooled cake.
  7. Make Buttercream Frosting: In a stand mixer or large bowl with a handheld mixer, beat softened butter, vanilla, and almond extract at medium-high speed for 1 to 1½ minutes until creamy.
  8. Add Powdered Sugar: Reduce mixer speed to low, and gradually add powdered sugar one cup at a time, mixing well after each addition.
  9. Adjust Consistency: Add 2 to 3 tablespoons of heavy cream if frosting is too stiff, then mix at medium-high speed until smooth.
  10. Color Buttercream: Mix in food color gel until the frosting is evenly colored with no streaks.
  11. Prepare Assembly Parchment: Cut parchment paper into 4-inch squares. Add 1 teaspoon of buttercream to center of each square.
  12. Layer Cakes: Place one cake circle on top of the buttercream on parchment. Spread 1½ to 2 tablespoons of buttercream evenly to the edges. Place a second cake circle on top and spread 2 to 2½ tablespoons of buttercream over it.
  13. Apply Crumb Coat: Spread a thin layer of buttercream over the sides of the mini cakes to seal in crumbs.
  14. Chill Cakes: Place the cakes in the refrigerator for about 1 hour to allow the crumb coat to firm up.
  15. Final Frosting Layer: Remove cakes from refrigerator and spread a thicker, smooth layer of buttercream over the top and sides using an offset spatula.
  16. Decorate and Chill: Add colorful sprinkles to the frosted cakes. Chill in the refrigerator until ready to serve.

Notes

  • Room temperature eggs help ensure a smooth batter and even baking.
  • Using a cooling rack upside down to cool cake prevents condensation and keeps the cake surface smooth for cutting.
  • The crumb coat helps to trap cake crumbs, allowing for a neat final layer of frosting.
  • Heavy cream in the frosting adjusts consistency for easier spreading.
  • Food color gel is preferred over liquid coloring to avoid thinning the frosting.
  • Chill cakes thoroughly for cleaner frosting application and better structure.
  • Optionally garnish with colorful sprinkles for a fun appearance.

Keywords: Lunch Box Cake, Mini Layered Cake, Devil’s Food Cake, Buttercream Frosting, Individual Cakes, Fun Dessert