Peanut Butter Mousse Brownies are stuffed with Reese's Peanut Butter Eggs and topped with a creamy No Bake Peanut Butter Mousse. They are puffy, rich and flavorful, and very easy to make.
Place a baking sheet (parchment paper) in a buttered 9x13-inch pan so it covers the bottom and 2 sides (to facilitate the brownie removal). Butter the parchment paper or spray with baking spray and set aside.
Bake for 35-40 minutes. A toothpick inserted in the center of the brownie should come out with a few crumbs attached, but NO raw batter.
Remove from oven and set aside to cool without removing the brownie from the pan. Once cooled down completely start on the mousse.