Quick and easy gluten-free blondie recipe. These bar cookies are flavored with brown sugar. Delicious with chocolate chips or not.
Preheat oven to 350 degrees F. Line an 8x8x2 pan with nonstick cooking spray. Line with parchment paper or foil.
Stir together melted butter, brown sugar, egg, and vanilla extract in a medium bowl until smooth. Add the gluten-free flour, baking powder, and salt. Stir until a thick batter forms. Add chocolate chips, if using.
Spread batter into prepared pan. Bake until set, about 25 minutes. A cake tester inserted into the center of the pan should come out with a few moist crumbs clinging to it.