1 box butter (or pudding) yellow cake mix
2 sticks butter
1/2 c. sugar
2 c. flour
1 tbsp. cinnamon
1/4 tsp. salt

Prepare cake mix according to package directions for 25 minutes at 350 degrees in a 9x13 inch pan or two round 9-inch pans.

While cake is baking, melt butter, then mix in sugar, flour, cinnamon and salt. Crumble this mixture into crumbs and put on top of cake. Bake for 20 minutes more. When cool, sprinkle powdered sugar.