Apple and Cinnamon Cake

Directions
Preheat the Oven: Set your oven to 350°F (175°C). Prepare a 9×9-inch square baking pan or a cake pan of similar size by greasing and flouring it.
Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and nutmeg. Set aside.
Cream Butter and Sugar: In a large bowl, beat the softened butter and 1 cup of sugar together until light and fluffy.
Add Eggs and Vanilla: Incorporate the eggs one at a time, mixing well after each addition. Then add the vanilla extract and mix until combined.
Combine Wet and Dry Ingredients: Gradually add the dry ingredients to the wet mixture, alternating with the sour cream. Start and end with the dry ingredients. Stir until just combined; be careful not to overmix to keep the cake soft.
Fold in Apples: Gently mix the diced apples into the batter.
Prepare for Baking: Pour the batter into the prepared baking pan, spreading it evenly.