Chewy, buttery blondies packed with butterscotch and peanut butter chips, topped with a gooey butterscotch-peanut butter-marshmallow layer, with sweet, creamy, vanilla notes throughout. The perfect magical treat!
Course Dessert
Cuisine American
Keyword award winning, bars, blondie, blue ribbon, browned butter, butterbeer, butterscotch, first place, marshmallow, peanut butter
Prep Time 30 minutesminutes
Cook Time 34 minutesminutes
Resting Time 1 hourhour35 minutesminutes
Total Time 2 hourshours39 minutesminutes
Servings 40
Calories 310kcal
Equipment
As an Amazon Associate I earn from qualifying purchases.9”x13” baking pan
Line a 9”x13” baking pan with parchment paper or non-stick foil. Preheat oven to 350°.
Place the butter and milk powder in a medium saucepan over medium heat, stir constantly until the milk solids are toasted golden brown and the mixture smells nutty, pour into a large mixing bowl.
454 g butter, 32 g milk powder
Mix in the brown sugar for about a minute, allowing the heat of the butter to dissolve the sugar. Allow the mixture to cool for about 20-30 minutes to avoid melting the chips later.
600 g brown sugar
Beat in the eggs 1 at a time until well combined and shiny. Beat in vanilla and salt.
5 large eggs, 30 ml vanilla, 10 g sea salt
Stir in flour, butterscotch chips and peanut butter chips just until combined. Spread the mixture evenly in the prepared pan.
480 g all-purpose flour, 170 g butterscotch chips, 170 g peanut butter chips
Bake in a preheated oven for ~34 minutes, the edges will be set, there may be some cracks in the top, the center will have a slight wobble. Set aside to cool completely.
For the topping:
Using the microwave or a double boiler, melt together the peanut butter, butter, and butterscotch chips. Stir in the clear vanilla extract, cool slightly (~5 minutes)
256 g creamy peanut butter, 113 g butter, 170 g butterscotch chips, 5 ml clear vanilla extract
Stir in the marshmallows until well coated. Spread in an even layer over top of the cooled blondies.
284 g marshmallows
Place in refrigerator to set for at least 1 hour. Once the blondies are fully set, cut into squares (24 large, 40 small) to serve.