✅ Preheat oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
✅ In a medium bowl, mix the flour, baking powder, cinnamon, nutmeg, and salt. Set aside.
✅ In a large bowl, beat the softened butter and sugar until light and fluffy. Add the eggs one at a time, beating well after each addition.
✅ Stir in the vanilla extract.
✅ Gradually add the dry ingredients to the wet ingredients, alternating with the milk, and mix until combined.
✅ Fold in the sliced apples.
✅ Pour the batter into the prepared cake pan, smoothing the top evenly.
✅ In a small bowl, mix together the sugar and cinnamon for the topping. Sprinkle evenly over the cake batter.
✅ Bake for 40–45 minutes, or until a toothpick inserted into the center comes out clean.
✅ Let the cake cool in the pan for 10 minutes before transferring to a wire rack to cool completely.