Preheat oven to 270F. Prepare brownie mix as directed. Spread batter evenly in greased 12 inch pizza pan. Bake, then cool.
Mix cream cheese, sugar, and peanut butter with electric mixer on medium speed until blended well. Spread mixture over brownies. Arrange banana slices over cream cheese mixture, sprinkle peanuts. Cook chocolate and butter in heavy sauce pan on very low heat, stirring constantly. When completely melted drizzle over peanuts.
Cajun Country -- New Iberia, Louisiana