CRUMBS:

3 bars butter (1 1/2 c.)
3 c. flour
3/4 c. sugar
1/2 tsp. vanilla
1 to 2 tbsp. cinnamon

Melt butter. Cool slightly. Mix with other ingredients and refrigerate while mixing and baking cake.

1 pkg. Duncan Hines Butter cake mix

Mix according to directions on package. Spread in jelly roll pan 17 1/2 x 11 1/2 x 1 1/2. Bake 20 minutes. Remove from oven. Spread crumbs evenly on cake and bake for an additional 20 minutes. When cool, dust with confectioners' sugar.