Moist Apple Crumble Coffee Cake

Ingredients

For the Cake:

1 ½ cups all-purpose flour

1 teaspoon baking powder

½ teaspoon baking soda

½ teaspoon salt

1 teaspoon ground cinnamon

½ teaspoon ground nutmeg

½ cup unsalted butter, softened

¾ cup granulated sugar

2 large eggs

1 teaspoon vanilla extract

½ cup sour cream (or Greek yogurt)

1 ½ cups apples, peeled and diced (Honeycrisp, Granny Smith, or your favorite)

For the Crumble Topping:

½ cup all-purpose flour

⅓ cup brown sugar

1 teaspoon ground cinnamon

¼ teaspoon salt

¼ cup unsalted butter, melted

For the Glaze (Optional):

½ cup powdered sugar

1 tablespoon milk

½ teaspoon vanilla extract