Mary, is this it?

MAMA PORTILLO'S CHOCOLATE CAKE CLONE

1 Betty Crocker Super Moist Chocolate Butter recipe Cake Mix
1 cup Hellmann's Mayonnaise
1 cup water
3 large eggs
2 cans Betty Crocker chocolate frosting

Preheat oven to 350 degrees F. Grease 2 round cake pans.

Beat dry cake mix, mayonnaise, water, and eggs together for 4 minutes. Pour into prepared pans.

Bake at 350 for 30 minutes. Cool slightly then remove from pans and cool on wire rack.

Frost and fill cooled layers with Betty Crocker chocolate frosting.