6  Milky Way bars -- about 18 oz
1/2 cup margarine
1 cup pecans (optional)
1 cup shortening
1 cup sugar
4 eggs
1 cup buttermilk
2 cups all-purpose flour
1/2 teaspoon baking soda
2 teaspoons vanilla

 Combine Milky Way bars, margarine and pecans in large pan on stove and heat until melted: Let cool. Combine shortening and sugar. Mix well. Stir in eggs and buttermilk. Mix just until thoroughly mixed. Mix flour and soda. Add flour mixture to candy mixture and third mixture, stirring gently. 
Bake at 350 degrees for 30-45 minutes in four layer cake pans or one 9" x 13" and 9" square pan (Recipe can be halved- this makes a 9" x 13" size cake). 

Frosting

1 (8-ounce) package cream cheese
1/2 cup margarine
1 (1-lb) box confectioners' sugar 

Mix well and spread on cool cake. Can use electric mixer or blender on frosting to make it smooth.