Katzen'S Chocolate Peanut Butter Brownies - cooking recipe

Ingredients

Brownie
1 cup butter or 1 cup margarine
2 cups sugar
2 teaspoons vanilla
4 eggs
3/4 cup cocoa
1 cup all-purpose flour
1/2 teaspoon baking powder
1/4 teaspoon salt
1 cup chopped nuts (I used walnuts)
1 cup peanut butter chips
3/4 cup peanut butter, crunchy, smooth (or a combination of both)
Frosting
1/2 cup butter
3/4 cup cocoa
3 cups powdered sugar
1/2 cup milk
1 teaspoon vanilla extract
1/2 cup peanut butter chips

Preparation

Brownies:.
Heat oven to 350 degrees.
Grease 13x9 inch baking pan.
Melt butter in microwave. Stir in sugar and vanilla. Beat in eggs, one at a time.
Add cocoa, flour, baking powder and salt; beat until well blended. Stir in nuts and 1 cup peanut butter chips. Pour batter into pan. Melt peanut butter in microwave, approximately 20 seconds, until soft. Drop by spoonfuls or pour over surface of brownie batter. Run a knife through the peanut butter/brownie batter, to swirl peanut butter through brownie batter. Ensure you pull the knife Bake 30-35 minutes or until brownies begin to pull away from sides.Cool completely.
Frosting:.
Melt butter; stir in cocoa. Add powdered sugar and milk, beating on medium speed to spreading consistency. Add more milk, if needed.
Spread on cooled brownies, sprinkle with 1/2 cup peanut butter chips.