1 stick (1/2 c.) butter
1 c. sugar
2 eggs
1 c. sour cream
1 tsp. vanilla
2 c. flour
1 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt
1 c. chocolate chips
walnuts or pecans

Combine butter, sugar and eggs. Then add in sour cream and vanilla. Then add in flour, powder, soda and salt. Mix in chocolate chips until well combined. Spread into greased 11 x 13 pan.

Topping:

1/4 c. sugar
1/2 tsp. cinnamon
1/2 c. walnuts or pecans

Combine ingredients.

Bake at 350°F for 35 minutes.