Crumb Cake - cooking recipe

Ingredients

1 Duncan Hines Butter Recipe cake mix
2/3 c. oil
2/3 c. milk
4 eggs
2 sticks margarine
1 stick butter
4 c. flour
2/3 c. brown sugar
2/3 c. white sugar
1 tsp. cinnamon
1 tsp. vanilla

Preparation

Beat together cake mix, oil, milk and eggs.
Mix well.
Bake at 350\u00b0 for 20 minutes in a 12 x 18 x 1-inch greased pan (size of pan is important).
While cake is baking, prepare crumb mixture. Melt margarine and butter; cool slightly.