Name: Chocolate Upside-Down Cake
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Yield: Makes one 9-inch (23 cm) square cake; 9 servings
Ingredients: Cooking spray; 1 tablespoon brown sugar; 2 tablespoons canola or extra-light olive oil; 2 squares (1 ounce/29 g each) unsweetened baking chocolate; ⅓ cup (43 g) chopped walnuts; ¼ teaspoon salt; 2 teaspoons baking powder; 1 cup (90 g) cake flour; ½ cup (112 g) mashed ripe banana (1 medium); ¼ cup (61 g) unsweetened applesauce; 1 large egg; 2 tablespoons granulated sugar; ¾ cup (180 g) buttermilk