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Cute Korean Bento Box Cake with pastel buttercream frosting

Lunchbox Cake (Korean Bento Cake Recipe)


  • Author: Sarah
  • Total Time: 35 minutes
  • Yield: 2 servings 1x

Description

The Bento Cake, also called a Korean Lunchbox Cake, is a small, adorable treat designed for birthdays, anniversaries, or just to brighten someone’s day. With cute pastel colors and minimalist decorations, this aesthetic mini cake is ideal for gifting or indulging.


Ingredients

Scale
  • 1 cup all-purpose flour
  • 3/4 cup granulated sugar
  • 1/4 cup unsalted butter, softened
  • 2 large eggs
  • 1/2 cup milk
  • 1 tsp vanilla extract
  • 1 tsp baking powder
  • 1/4 tsp salt
  • Buttercream frosting (for decorating)
  • Food coloring and sprinkles (optional)

Instructions

  1. Preheat oven to 350°F. Line two 4-inch round cake pans with parchment paper.
  2. In a bowl, whisk together eggs, milk, butter, and vanilla.
  3. In a separate bowl, sift flour, sugar, baking powder, and salt.
  4. Gradually add the dry ingredients into the wet ingredients, mixing until smooth.
  5. Pour the batter evenly into the pans and bake for 18–22 minutes. Let cool completely.
  6. Frost the top and sides with buttercream. Add cute decorations or messages like “Happy Birthday.”
  7. Place cake into a small bento box and refrigerate until ready to serve.

Notes

Try ombré buttercream, pastel colors, or add doodles for a personalized touch. Great for birthdays, anniversaries, or just-because gifts.

  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Category: Dessert
  • Method: Baked
  • Cuisine: Korean

Nutrition

  • Serving Size: 1 mini cake
  • Calories: 380
  • Sugar: 28g
  • Sodium: 210mg
  • Fat: 18g
  • Saturated Fat: 11g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 47g
  • Fiber: 1g
  • Protein: 5g
  • Cholesterol: 90mg

Keywords: bento cake, lunchbox cake, korean mini cake, cute birthday cake, aesthetic cake