Crumb Cake

Jersey Diner Coffee Cake

1 pkg Duncan Hines Butter Cake mix (or any other brand)
4 large eggs
2/3 cup milk
2/3 cup vegetable oil

Preheat oven to 350 degrees F.
Blend together until lumps disappear - do not over mix.
Bake in a greased 11x15 jellyroll pan for 20-25 minutes.

Crumb Topping:

4 cups flour
2/3 cup sugar
2/3 cup packed light brown sugar
1 Tablespoon cinnamon
1 Tablespoon vanilla extract (I use Floridian Gourmet [see photograph] - this guy knows his stuff! Check the website and see if you can still get your hands on some)
2 sticks of margarine
1 stick of butter

Melt butters and let cool slightly. Add vanilla.
Mix flour, cinnamon, sugars then add the liquid mixture.
Crumble with hands and place on warm cake. Bake again for 20 min at 350 degrees F.
Let cool and dust with powdered sugar.