Tollhouse Crumbcake

Topping:
1 Tbs four
1/2 cup brown sugar
2 Tbs butter
1/2 cup chopped nuts
1 - 12 oz pkg semi sweet little chocolate chips

Cake:
2 cups flour
1 tsp baking powder
1/2 tsp salt
1/2 cup butter
1 cup sugar
1 tsp vanilla
3 eggs
1 cup sour cream

Preheat oven to 350 °F.

To make topping, combine flour, brown sugar, butter; mix well. Stir in nuts and 1/2 cup chips, set aside.

To make cake, combine flour, baking powder, baking soda, and salt. In another bowl, combine butter, sugar, and vanilla; beat until creamy, then add eggs, one at a time, beating well after each. Gradually add flour mixture alternately with sour cream. Fold in remaining 1 1/2 chips, spread into greased 9x13 pan. Sprinkle topping over cake batter, and bake for 45-50 minutes.