Directions

1. Preheat the oven to 350°F with a rack set in the center. Coat a 9-inch springform pan that’s 3 inches tall with cooking spray. Wrap the bottom of the springform with aluminum foil to prevent any butter or batter from leaking.
2. Stir together flour, baking powder, 1 teaspoon cinnamon, the salt, and nutmeg in a medium bowl. Set aside.
3. Put ¾ cup softened butter and 1 cup sugar in the bowl of a stand mixer or a large mixing bowl and beat on medium speed with the paddle attachment until light and fluffy, about 2 minutes. Add eggs 1 at a time, beating well after each addition, until the yolk disappears. Add flour mixture on low speed and mix until combined, making sure there are no lumps. Beat in vanilla.
4. Spread batter into an even layer in the prepared springform pan. Arrange apple slices on top in 2 concentric circles. Gently press apples into the batter slightly. Brush apples with melted butter. Stir together the remaining 1 tablespoon sugar and 1/2 teaspoon cinnamon. Sprinkle cinnamon-sugar evenly over the apples.
5. Bake cake until a toothpick inserted in the center comes out clean, 55-60 minutes. Let cake cool in the pan on a wire rack for 10 minutes. Run a knife around the edges and release the sides of the pan. Serve cake warm or at room temperature, with whipped cream, if you like.