Preheat your oven to 350°F (175°C). Grease and flour a 9-inch round cake pan to prevent sticking.
Peel, core, and thinly slice the apples. Toss the slices with lemon zest to prevent browning and set aside.
2 cups all-purpose flour
In a large mixing bowl, whisk together the flour, cinnamon, nutmeg, and salt until evenly combined.
2 cups all-purpose flour
In another bowl, whisk the eggs, milk, vanilla extract, and melted butter until smooth.
2 cups all-purpose flour
Pour the wet mixture into the dry ingredients and gently fold with a spatula until just combined — be careful not to overmix.
Fold in the apple slices so they are evenly distributed throughout the batter.
2 cups all-purpose flour
Pour the batter into the prepared cake pan, smoothing the top with a spatula for an even surface.
In a small bowl, mix the brown sugar, cinnamon, and nutmeg for the caramelized topping.
2 cups all-purpose flour
Sprinkle the spiced brown sugar evenly over the top of the cake batter.
2 cups all-purpose flour
Bake the cake in the preheated oven for 40-45 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean.
Allow the cake to cool for at least 15 minutes in the pan before transferring to a wire rack to cool completely.
Serve slices of the cake with a crispy caramelized sugar crown, enjoying the combination of moist apple chunks and crunchy topping.