Delicious Apple Crumble Coffee Cake

Follow our step-by-step guide on how to make Delicious Apple Crumble Coffee Cake.

1. Step 1

   Begin by gathering all your ingredients and preheating your oven to a cozy 350°F (175°C).

2. Step 2

   Generously butter a 9x12-inch baking dish to ensure your creation slides out effortlessly.

3. Step 3

   In a mixing bowl, whisk together the flour, baking powder, baking soda, and salt, then set this dry blend aside for later use.

4. Step 4

   For the delightful crumble topping, combine chopped walnuts, brown sugar, white sugar, melted butter, cinnamon, and a pinch of salt in a separate bowl.

5. Step 5

   Mix until the walnuts are beautifully coated in the sugary goodness.

6. Step 6

   In another bowl, cream together the sugar and butter until they meld into a smooth mixture.

7. Step 7

   Add one egg and whisk for about 2 to 3 minutes until well blended, then incorporate the second egg until fully combined.

8. Step 8

   Stir in yogurt and vanilla extract, ensuring everything is harmoniously mixed.

9. Step 9

   Gradually fold the dry flour mixture into the wet ingredients, whisking just until the flour disappears—remember, overmixing is the enemy of fluffiness.

10. Step 10

    Prepare your apples by removing the cores and slicing them into thin 1/8- to 1/4-inch thick slices, then dice these slices into small cubes.

11. Step 11

    Gently fold the diced apples into the cake batter with a spatula, being careful not to overwork the mixture.

12. Step 12

    Spread half of the batter evenly in the bottom of your prepared baking dish, then sprinkle half of the crumble mixture over the top.

13. Step 13

    Dollop the remaining batter on top and carefully spread it to cover the crumble, finishing with the rest of the crumble mixture, which you should gently press into the batter.

14. Step 14

    Bake in the center of your preheated oven for about 40 minutes, or until a toothpick inserted into the center comes out clean, signaling that your cake is ready.

15. Step 15

    Allow the cake to cool to room temperature for about 30 minutes before slicing into it and serving.

16. Step 16

    Enjoy the warm, comforting flavors that fill your kitchen, and savor each bite of this delightful treat.