Fluffernutter Bars (Print version)

Chewy peanut butter cookie bars layered with marshmallow creme for a gooey, nostalgic dessert.

# Ingredients:

For the peanut butter dough

01 - 1/2 cup (113 g) unsalted butter, softened
02 - 1/2 cup (130 g) creamy no-stir peanut butter
03 - 1 cup (200 g) packed light brown sugar
04 - 1 large egg, room temperature
05 - 2 teaspoons vanilla extract
06 - 1 1/2 cups (190 g) all-purpose flour
07 - 1/2 teaspoon baking powder
08 - 1/2 teaspoon fine salt

For the filling

09 - 1 jar (7 oz or 198 g) marshmallow creme
10 - 1/4 cup (65 g) creamy peanut butter, warmed until pourable
11 - Nonstick spray, for the spatula and knife

# Instructions:

01 - Preheat the oven to 350°F (175°C). Line an 8-inch square baking pan with parchment paper, leaving overhang on two sides.
02 - Beat the softened butter, 1/2 cup peanut butter, and brown sugar until smooth and creamy. Mix in the egg and vanilla until fully combined.
03 - Stir in the flour, baking powder, and salt just until a thick dough forms. Do not overmix once the flour disappears.
04 - Press about two-thirds of the dough evenly into the prepared pan. Lightly grease a spatula, spread the marshmallow creme over the dough, and drizzle the warmed peanut butter over the top.
05 - Flatten small pieces of the remaining dough between your fingers and place them over the marshmallow layer, leaving some marshmallow visible.
06 - Bake for 26-30 minutes, until the edges are golden and the center looks set but still soft. Avoid baking until the whole top is deeply browned.
07 - Cool in the pan for at least 1 hour. Lift out with the parchment, then slice with a lightly greased sharp knife.

# Good to know:

01 - For neat slices, cool completely before cutting.
02 - A standard creamy peanut butter works better than natural peanut butter here.
03 - The bars taste best within the first 3 days.