3x13 ungreased pan, 350 degrees.

1 c. peanut butter
6 tbsp. (3/4 stick) softened butter
1 1/2 c. sugar
3 eggs
1 tsp. vanilla
1 c. all-purpose flour
1/4 tsp. salt
1 (6 oz.) pkg. chocolate chips

In a large bowl mix first five ingredients. Blend in flour and salt. Stir in chocolate chips. Spread into pan. Bake 25-30 minutes.