1 ½ cups Butter (at room temperature)
1 ½ cups Milk Chocolate chips (melted)
3 cups powdered sugar

On medium speed, beat butter until fluffy. Beat in chocolate until just smooth, 30 seconds. Beat in sugar until fluffy.
*Directions for whole “Cinco de Mayo” cake.

CAKE:
1 pkg. (18.25 oz.) devil's food cake mix
3 eggs
½ cup sour cream