The perfect combination of a traditional blondie and a peanut butter cookie - absolutely delicious!
Preheat oven to 350 degrees and line an 8x8 baking dish with parchment paper, aluminum foil and lightly grease with cooking spray. Set aside.
In a large bowl, combine the melted butter and brown sugar. Mix thoroughly. Add in the egg and vanilla.
Mix in the peanut butter and make sure all of the wet ingredients are thoroughly mixed.
Add in the salt and flour.
Spread the batter in the baking dish and spread out evenly with a spatula.
Bake for 20-25 minutes or until a toothpick inserted in the middle comes our clean.