Step 1: Preheat your oven to 375°F (190°C). Lightly grease a baking sheet or line it with parchment paper to prevent sticking.
Step 2: In a large mixing bowl, combine the flour, sugar, baking powder, salt, cinnamon, and nutmeg. Whisk until nicely blended to distribute leavening and spices evenly.
Step 3: In a separate bowl, whisk together the milk, eggs, vanilla extract, and melted butter until smooth and combined.
Step 4: Pour the wet mixture into the bowl with your dry ingredients. Stir gently until just combined, being careful not to overmix (a few lumps are fine).
Step 5: Gently fold the diced apples into the batter until they are distributed throughout.
Step 6: Drop spoonfuls (about 1.5 tablespoons each) of batter onto your prepared baking sheet, spacing them about 2 inches apart.
Step 7: Bake for 15-18 minutes, or until the fritters are golden brown and a toothpick inserted into the center comes out clean.
Step 8: While the fritters bake, prepare the glaze: In a small bowl, whisk together powdered sugar, milk, and vanilla extract until super smooth and easily drizzlable. Adjust thickness with more milk or powdered sugar if needed.
Step 9: As soon as the fritters come out of the oven, while still warm, drizzle the luscious glaze all over them. Serve immediately.