Zebras - cooking recipe

Ingredients

1 1/2 c. (9 oz.) semi-sweet chocolate chips
2 c. all-purpose flour
1 tsp. baking powder
2 sticks (1 c.) butter or margarine (at room temperature)
1 c. packed light brown sugar
2 large eggs (at room temperature)
1 tsp. vanilla extract
3/4 c. walnuts, coarsely chopped

Preparation

Heat oven to 350\u00b0.
Grease a 13 x 9-inch baking pan.
Line with foil.
Grease foil.
Melt 1 cup chocolate chips in a small saucepan over low heat, stirring often.
Remove from heat and cool slightly. Mix flour and baking powder.