Brownies - cooking recipe

Ingredients

1 pkg. Duncan Hines double chocolate brownie mix
1 c. sour cream
1 (12 oz.) pkg. chocolate chips
1/2 c. walnuts

Preparation

Prepare as directed on box.
Add other ingredients as listed. Pour into 13 x 9 x 2-inch pan, which has been greased only on the bottom.
Bake in middle shelf of oven at 350\u00b0 for 35 minutes.