Apple Streusel Coffee Cake

Instructions

1. 1

   Preheat your oven to 350 degrees F (175 degrees C). Grease and flour a 9x13 inch baking pan, or spray with baking spray.

2. 2

   Cream together the softened butter and 1 cup of granulated sugar in a large bowl until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla extract.

3. 3

   In a separate medium bowl, whisk together 2 cups of the all-purpose flour, baking powder, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients, alternating with the Greek yogurt, beginning and ending with the dry ingredients. Mix until just combined, do not overmix.

4. 4

   Spread half of the batter evenly into the prepared baking pan.

5. 5

   In another bowl, combine the diced apples, the remaining 1/2 cup granulated sugar, cinnamon, and the remaining 1/4 cup all-purpose flour. Stir well to coat the apples.

6. 6

   Spoon the apple mixture evenly over the first layer of batter in the pan. Dollop the remaining cake batter over the apples, spreading gently to cover as much as possible.

7. 7

   For the streusel topping, combine the brown sugar, 1/4 cup all-purpose flour, and 1/4 cup (1/2 stick) cold unsalted butter cut into small pieces in a small bowl. Use your fingertips or a pastry blender to mix until coarse crumbs form. Sprinkle the streusel evenly over the top of the cake batter.

8. 8

   Bake for 45 to 55 minutes, or until a wooden skewer inserted into the center of the cake comes out clean. Let the coffee cake cool in the pan on a wire rack before serving.

9. 9

   Serve warm or at room temperature. Optional: Drizzle with a simple glaze made from powdered sugar and milk if desired.