Preheat oven to 350°. Spray pan with non stick spray. Prepare box of brownies as directed on box. Pour half of batter in 9x13 pan.

Mix cream cheese, peanut butter, 2 eggs, sugar, flour and vanilla together.

Spoon tablespoons of cream cheese mixture onto brownie batter in pan. Pour remaining brownie batter on top. Take knife and swirl brownie and cream cheese mixture together

Bake for 25 minutes or until a tooth pick stuck into the middle comes out clean.