RECIPE USING FUNFETTI CAKE MIX RECIPES

Steps:

• Make cake: Preheat oven to 350° and line three 8" cake pans with parchment paper.
• In a large bowl using hand mixer (or in the bowl of a stand mixer), beat together butter and sugar until light and fluffy. Add eggs one at a time, beating well after each addition. Add vanilla and mix until combined.
• In another large bowl, whisk together flour, cornstarch, baking powder, and salt. Add half of the dry ingredients to the wet ingredients, beating until just combined. Pour in the milk and mix until fully incorporated. Add remaining dry ingredients and stir until just combined. Fold in sprinkles.
• Divide batter evenly between prepared cake pans. Bake until slightly golden on top and a toothpick inserted into the middle comes out clean, about 30 to 35 minutes. Let cool completely.
• Meanwhile, make buttercream: in a large bowl using a hand mixer, beat butter until light and fluffy, 2 to 3 minutes. Add powdered sugar, sour cream, vanilla, heavy cream, and salt and beat until smooth.
• Assemble cake: Place the bottom layer of the cake on your serving platter and spread with buttercream; repeat with the second layer of cake. Place the last layer of cake on top, then frost the entire cake with buttercream. Garnish with more sprinkles, if desired.

Steps:

• Beat brown sugar, unsalted butter, and white sugar together in a bowl using an electric mixer until light and fluffy, 3 to 4 minutes. Mix in egg and 2 teaspoons vanilla extract until smooth. With the mixer on low speed, add flour, baking soda, and salt and blend until batter is just mixed. Fold chocolate chips into batter. Batter will be thick. Chill in refrigerator at least 30 minutes to overnight.
• Preheat oven to 350 degrees F (175 degrees C). Line a 9-inch cake pan with parchment paper.
• Spread batter into the prepared cake pan.
• Bake in th preheated oven until edges are golden brown, about 20 minutes. Slightly cool cake in the pan before transferring to a wire rack to cool completely, about 30 minutes.
• Beat shortening and butter together in a bowl using an electric mixer until smooth. Slowly beat in 3 cups confectioners' sugar until smooth. Mix water and 1 teaspoon vanilla extract into confectioners' sugar mixture; add remaining confectioners' sugar and mix until buttercream is smooth. Add more water to thin, if needed.
• Spread buttercream onto cookie cake.