Ingredients
1 cup packed brown sugar1/2 cup butter, melted1 large egg, room temperature1 teaspoon vanilla extract1 cup all-purpose flour1/2 teaspoon baking powder1/4 teaspoon baking soda1/4 teaspoon salt2 small apples (about 9 ounces), peeled and sliced1/2 cup chopped salted peanuts
Preparation
Preheat oven to 350°. Beat brown sugar and butter until light and fluffy, 5-7 minutes. Add egg and vanilla; beat until smooth. In a separate bowl, whisk together flour, baking powder, baking soda and salt; gradually beat into brown sugar mixture just until combined (batter will be thick).
Spread all but 1/4 cup batter into a greased and floured 8-in. square baking dish. Layer with apple slices; dot with remaining batter. Sprinkle with peanuts. Bake until top is golden brown and center is set, 22-28 minutes. Cool on a wire rack.
