In a large mixing bowl, whisk together the all-purpose flour, sugar, baking powder, and salt, ensuring no lumps remain.

In another bowl, cream the unsalted butter until fluffy, then gradually add sugar until light and airy.

Incorporate eggs one at a time, followed by milk.

Gently fold the dry ingredients into the wet mix until just combined.

Preheat your oven to 350°F (175°C) and grease your cake pans.

Evenly divide the batter between the pans, smoothing the tops.

Bake for 25-30 minutes, until done. Allow cakes to cool.

Peel, core, and slice apples. In a skillet, cook apples with sugar, cinnamon, and nutmeg until soft.

Once the cake layers are cooled, assemble the cake by layering cakes and filling.

Serve with whipped cream or vanilla ice cream.