01 -
Preheat oven to 350°F. Butter and flour a 9x13-inch baking dish or line it with parchment paper for easy removal.
02 -
Whisk together flour, baking powder, baking soda, salt, cinnamon, and nutmeg until evenly blended.
03 -
Beat softened butter with granulated sugar using an electric mixer until light and fluffy, approximately 3 to 4 minutes.
04 -
Add eggs one at a time to the creamed mixture, beating well after each addition. Stir in the vanilla extract until combined.
05 -
Add the flour mixture in three parts, alternating with Greek yogurt, starting and ending with the flour. Mix gently until just combined to avoid overmixing.
06 -
Gently fold chopped Honeycrisp apples into the batter, ensuring even distribution without overworking the mixture.
07 -
Spread the batter evenly in the prepared baking pan, smoothing the surface with a spatula.
08 -
Combine brown sugar, ground cinnamon, and melted butter in a small bowl until damp and crumbly.
09 -
Sprinkle the cinnamon-sugar topping evenly over the batter. Bake for 35 to 40 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
10 -
Allow cake to cool in the pan for at least 20 minutes. Whisk together powdered sugar, milk, and vanilla extract until smooth and pourable. Drizzle glaze over the cooled cake before serving.