01 -
Preheat oven to 350°F. Butter and flour a 9x13-inch baking pan or line with parchment paper.
02 -
In a medium bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, and nutmeg until evenly blended.
03 -
Using an electric mixer, beat softened butter and granulated sugar on medium speed until light and fluffy, approximately 3 to 4 minutes.
04 -
Add eggs one at a time, beating well after each addition. Mix in vanilla extract until combined.
05 -
Add flour mixture in three parts, alternating with Greek yogurt, beginning and ending with flour. Stir gently until just combined to avoid overmixing.
06 -
Gently fold chopped apples into the batter, ensuring even distribution.
07 -
Spread batter evenly in prepared pan, smoothing the surface with a spatula.
08 -
Mix brown sugar, cinnamon, and melted butter in a small bowl until crumbly and damp.
09 -
Sprinkle cinnamon-sugar mixture evenly over batter and bake for 35 to 40 minutes, or until a toothpick inserted at the center comes out with a few moist crumbs.
10 -
Let cake cool in pan for at least 20 minutes. Whisk powdered sugar, milk, and vanilla extract in a bowl until smooth and pourable.
11 -
Drizzle glaze evenly over cooled cake just before serving.