Ho Ho Bars - cooking recipe

Ingredients

3/4 cup sugar
1/2 cup margarine, softened
2/3 cup shortening
2/3 cup evaporated milk
2 teaspoons vanilla extract
1 pinch salt
1 (18 1/2 ounce) box devil's food cake mix
dark chocolate frosting (container)

Preparation

Prepare cake mix as directed on box. Pour batter into a greased 11x17 cake pan and bake 12-15 minutes at 350\u00b0F Cool.
Combine sugar, margarine, shortening, millk, vanilla, and salt. Beat until fluffy (10-15 minutes). Spread over cooked cake.
Melt frosting in microwave for 20 seconds to soften. Spread frosting over white cream layer.