01 -
Preheat oven to 350 degrees or temperature on back of brownie box. Lightly grease a 9 or 10-inch spring form pan and set aside.
02 -
In large bowl, mix brownie batter according to package directions. Pour into prepared pan and bake 30-40 minutes or until set. Look on the back of the box for the time it takes to bake a 9×9 square pan of brownies-that's a good time to start off with and then go from there. Remove brownies from oven and cool completely.
03 -
In a stand mixer, whip heavy cream with vanilla and cornstarch until firm peaks form. Scrape whipped cream into smaller bowl and set aside.
04 -
In the same stand mixer bowl (no need to wash!), whip cream cheese and peanut butter together until combined. Stir in powdered sugar and vanilla. Scrape sides and whip again for 1 minute. Carefully fold in whipped cream.
05 -
Scoop peanut butter mixture onto cooked brownie and smooth the top. Refrigerate until set, at least 2 hours.
06 -
When you are ready to serve, remove sides of spring form pan. Cut into pieces and drizzle with chocolate sauce and salted peanuts.