peanutty brownie pizza

Here's the recipe:

1 pkg. fudge brownie mix (plus ingredients to make brownie)
8 oz. cream cheese
1/2 cup packed brown sugar
1/4 cupo creamy peanut butter
2 pkgs. (1.6 oz. each) peanut butter cup candy, chopped
1/4 cup peanuts, chopped
2 bananas, sliced
2 Tbsp. (1 oz.) semi-sweet chocolate chips
1 tsp. vegetable oil

Preheat oven to 375 degrees. Cut a circle of parchment paper to fit large round stone and place on the stone. Prepare brownie mix according to directions on package. Pour onto parchment and spread into 13 inch circle. Bake 15-18 minutes until brownie is set. Cool completely.

Mix crean cheese, brown sugar and peanut butter and spread over brownie to within 1/2 inch from edge. Chop candy and peanuts and sprinkle over cream cheese mixture. Arrange bananas over brownie. Microwave chocolate with oil until chocolate is melted and drizzle over the pizza.