Spumoni Cake

This may look a little sloppy, but it was GREAT!  With the 4 different frosting flavors mingling with the moist chocolate cake (although it was less fluffy than a box cake); I think this is now Alex's favorite cake.

Spumoni Cake
Rainbow Frosting, below
3 3/4 cups All-Purpose Cake Mix (recipe posted under Mixes)
1/4 cup brown sugar, packed
3/4 cup cocoa powder
1/4 tsp baking soda
1/2 cups buttermilk (3/4 cup buttermilk if egg powder in mix)
1 cup water
3 eggs (only 1 egg if egg powder in mix)
1 tsp vanilla extract
1/4 cup butter or margarine, melted

Prepare frosting, set aside. Preheat oven to 350F. Grease and flour 2 8-9-inch round pans.

Combine Mix, brown sugar, cocoa powder, and soda. Mix well. Add buttermilk, eggs, vanilla, and butter. Beat on high 3-4 mins. Pour into pans. Bake 25-35 mins, until toothpick comes out clean.

Cool 10 mins. When cool, cut each layer horizontally in half. Frost each layer with a different color. Stack layers. Do not frost sides.

Rainbow Frosting
1 cup milk
2 Tbsp flour
Pinch salt
1/2 cup butter or margarine, softened
1/2 cup shortening
1 cup sugar
2-3 drops each green, yellow, and red food coloring
1/4 tsp each almond, lemon, and peppermint extracts
3 Tbsp cocoa powder
1/4 tsp vanilla extract

In saucepan, combine milk, flour, and salt. Stirring constantly, cook 5-7 mins, until thickened. Cool. Combine butter, shortening, and sugar in a bowl. Beat well. Add to cooled milk mix, beating constantly. Beat 7 mins. until smooth.

Divide among 4 bowls. In first, add green and almond. In second, add yellow and lemon. In third, add red and peppermint. In fourth, add cocoa powder and vanilla.