This is a variation on an old German recipe for "Lightning Cake." What makes it special is fruit topping and then crumbs. It came from a church cookbook my Mom gave me years ago, "German-American Recipes," published back in the late 60s or early 70s by Concordia Lutheran Church in Watertown, NY.
Blitz Kuchen
1 c. (2 sticks) butter, softened
1 c. sugar
4 eggs
2 c. flour
2 tsp. baking powder
Squirt of lemon juice (or 1 tsp. vanilla)
1 can of fruit pie filling
Crumbs for top
1/4 c. butter, softened
1/4 c. flour
1/4 c. oats
3/4 c. brown sugar, packed
Beat the softened butter, add sugar then eggs, beating constantly. Add remaining ingredients and beat until mixed. Spread in a 9x13" pan or two 8x8 square pans or two 9" round pans. Spread fruit pie filling on top. Mix crumb ingredients with a fork or pastry blender and sprinkle on top.
Bake at 350F for about 40-45 minutes.
Delicious!