RAINBOW CAKE COLORS RECIPES

Steps:

• Heat oven to 350°F. Line two 15x10x1-inch pans with cooking parchment paper.
• In large bowl, beat eggs with electric mixer on high speed until thick and lemon-colored, about 6 minutes. Add cake mix, sour cream, water and oil. Beat on low speed 30 seconds, then on medium speed 1 minute.
• Divide batter into 6 small bowls, about 3/4 cup batter per bowl. Add red, orange, yellow, green, blue and purple gel food colors, one to each bowl; mix. Pour each colored batter into a decorating bag or resealable food-storage plastic bag, and cut one corner off each bag. For better control with cake batter, be sure to cut small opening on end of each resealable bag.
• Starting with purple batter, carefully squeeze a thin diagonal line of colored batter onto each pan; repeating with blue, green, yellow, orange and red to make a rainbow-striped pattern. Continue until all batter has been used and pans are equally filled. It's ok to leave small spaces in between colors, as batter will fill in during baking.
• Bake 8 to 10 minutes or until top springs back when touched. Meanwhile, sprinkle powdered sugar over two clean kitchen towels. Remove cakes from oven. Run metal spatula around edges of pans; carefully turn one on to each kitchen towel. Peel away parchment paper. Immediately roll up cake and towel from narrow end. Allow cakes to cool 30 minutes.
• In medium bowl, mix frosting and whipped topping. Mix in Betty Crocker™ Candy Shop decors rainbow chips, if desired.
• Carefully unroll cakes; spread half of the filling over each cake. Roll cakes up into logs; refrigerate at least 1 hour before serving.
• Cut into slices to serve. Store covered in refrigerator.

Steps:

• Preheat oven to 350°. Line bottoms of three 6-in. round baking pans with parchment; grease and flour pans., In a large bowl, whisk flour, sugar, baking powder and salt. Beat in butter until crumbly. Add egg whites, 1 at a time, beating well after each addition. Gradually beat in 1/4 cup milk and extracts; beat on medium until light and fluffy, about 2 minutes. Gradually beat in remaining milk. Gently fold in jimmies., Transfer batter to prepared pans. Bake until a toothpick inserted in each center comes out clean, 25-30 minutes. Cool in pans 10 minutes before removing to wire racks; remove parchment. Cool completely., For buttercream, in a microwave, melt chocolate with cream until smooth, stirring every 30 seconds. Set aside to cool slightly. In heatproof bowl of stand mixer, whisk egg whites, sugar, cream of tartar and salt until blended. Place over simmering water in a large saucepan over medium heat. Whisking constantly, heat mixture until a thermometer reads 160°, 8-10 minutes., Remove from heat. With whisk attachment of stand mixer, beat on high speed until cooled to 90°, about 7 minutes. Gradually beat in butter, a few tablespoons at a time, on medium speed until smooth; beat in vanilla and white chocolate mixture., Spread frosting between layers and over top and sides of cake. Divide remaining buttercream into smaller portions; stir in food coloring to achieve desired colors. Decorate as desired. Store in refrigerator.