Instructions: 1. In large bowl, cream together butter, sugar and one egg. Beat in second egg and vanilla. Add flour, baking powder, soda, and sour cream and beat to mix. Stir in chips. Pour into greased 9"x13" pan and smooth top.

2. For topping. Mix brown sugar, flour, cocoa and butter together until crumbly. Stir in chips and nuts. Sprinkle over top of batter. Bake at 350F for 45 mins until tester comes clean.

Very good. Freezes well, which is lucky, since it makes such a huge amount!

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.