Preheat your oven to 350°F (175°C).
Grease and flour a 9x13-inch baking pan.
Cream the butter and sugar together in a large bowl until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Mix in the vanilla extract.
In a separate bowl, sift together the flour, baking powder, baking soda, salt, cinnamon, nutmeg, and ginger.
Slowly add the flour mixture to the butter mixture, mixing just until combined.
Gently fold in the apple slices.
Pour the batter into the prepared baking pan.
Bake for 55-60 minutes, or until a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.