Begin by peeling, coring, and dicing one medium apple into small chunks, then set aside.

In a large mixing bowl, whisk together all the dry ingredients until well combined.

In a separate bowl, combine milk, egg, vanilla extract, and melted butter. Whisk until smooth.

Pour the wet ingredients into the dry ingredients and stir until just combined, then fold in the diced apples.

Preheat a non-stick skillet over medium heat and greased with cooking spray. Pour 1/4 cup of batter per pancake.

Cook until bubbles form on the surface, then flip and cook until golden brown.

Serve stacked and drizzle with a glaze made from powdered sugar, milk, vanilla extract, and cinnamon.