Preparation Steps

• Preheat the oven to 350°F (175°C). Grease and flour a 9x13-inch baking pan or line with parchment paper.
• In a large bowl, whisk together the flour, granulated sugar, baking powder, salt, ground cinnamon, and nutmeg until evenly combined.
• In a separate bowl, beat the eggs, then whisk in the milk, melted butter, and vanilla extract.
• Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix; a few small lumps are fine.
• Toss the diced apples with brown sugar and a pinch of cinnamon if desired, then gently fold them into the batter.
• Spread the batter evenly into the prepared baking pan and smooth the top with a spatula.
• Bake for 40 to 45 minutes, or until a toothpick inserted into the center comes out clean and the top is golden brown.
• Remove the cake from the oven and let it cool in the pan on a wire rack for 15 minutes.
• While the cake cools slightly, make the glaze by whisking the powdered sugar, milk, and vanilla together until smooth. Adjust milk to reach a drizzling consistency.
• Drizzle the glaze over the warm cake. Allow the glaze to set for a few minutes before slicing and serving.