Description

Chewy, fudgy chocolate cookies made from cake mix and filled with fluffy homemade vanilla buttercream—a fun, no-fuss treat perfect for parties or weeknight baking.

Ingredients

1 box (15.25 oz) chocolate cake mix
2 large eggs
1/2 cup vegetable oil
1 tsp vanilla extract (for cookie dough)
1/2 cup unsalted butter, softened (for filling)
1¼ cups powdered sugar (for filling)
1–2 tbsp milk or cream (for filling)
1 tsp vanilla extract (for filling)
Pinch of salt (for filling)

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Instructions

Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
In a bowl, mix cake mix, eggs, vegetable oil, and vanilla until smooth.
Drop tablespoon-sized dough mounds onto sheets with space between. Bake until edges set but centers are soft—about 8–10 minutes. Cool completely.
Beat butter until creamy. Add powdered sugar, vanilla, salt, and enough milk/cream until light, fluffy, and pipeable.
Match cookies by size. Spread or pipe frosting on one, then sandwich with another. Roll edges in sprinkles or mini chocolate chips if desired.
Chill 20 minutes for best texture, then enjoy!

Notes

Use different cake mix flavors—red velvet, funfetti, lemon—for tasty variations.
Watch baking time carefully to ensure a chewy center.
Store at room temperature in a sealed container for up to 2 days (or refrigerate if warm).
Freeze plain cookies or frosting separately; assemble fresh or freeze assembled for later.