Next crack in the eggs, mixing after each one until combined. Finally, mix in the vanilla extract.
Spread the chocolate brownie batter in an even layer in the prepared pan. Bake for 20 minutes at 350 degrees.
– Stir well, and then spread the melted peanut butter evenly over the cooled brownies. Place in the freezer for about 30 minutes to allow this layer to firm up.
Add the powdered sugar, milk, and cocoa powder, whisking until smooth.Melt the butter and marshmallows over medium heat, stirring continuously, until both are melted and mixture is well-combined.