Ingredients

The following ingredients have 4 Servings
  • 3/4 cup butter
  • 1 ¾ cups granulated sugar
  • 4 large eggs
  • 1 teaspoon vanilla
  • 3 cups all-purpose flour
  • 2 teaspoons cinnamon
  • 1 ½ teaspoons baking powder
  • 3/4 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 cup sour cream
  • 3 cups granny smith apples, (peeled and chopped)
  • 1 cup brown sugar, (firmly packed)
  • 1/2 cup granulated sugar
  • 1 tablespoon cinnamon
  • 1/4 teaspoon nutmeg
  • 1/2 teaspoon salt
  • 1 cup unsalted butter, (warm, melted )
  • 2 ½ cups all-purpose flour

Instruction

  • Spray a 9X13 inch baking dish with nonstick cooking spray; Set aside. Preheat the oven to 350 degrees.
  • In a large bowl, using a hand-held electric mixer, cream together the butter and granulated sugar until light and fluffy. Add in the eggs one at a time, mixing until yellow disappears. Mix in vanilla. 
  • In a separate bowl, whisk together flour, cinnamon, baking powder, baking soda, and salt. Add to cream mixture alternating with the sour cream until well combined. 
  • Add flour mixture to butter mixture alternating with the sour cream until well combined. Fold in the apples.
  • Pour batter into the prepared baking dish, spread evenly with an offset spatula. 
  • Bake in preheated oven for 20 minutes.
  • Meanwhile, make the Topping. Whisk together both sugars, cinnamon, nutmeg, and salt until combined. Add warm melted butter and stir until combined.
  • Add flour and mix with fork until clumps form (topping should look a bit wet). Set aside.
  • Remove cake from oven and spread crumb topping clumps (don't press them down) evenly over partially baked coffee cake, covering completely. Topping will be thick.
  • Return to oven and bake until a toothpick inserted in the center comes out with just a few moist crumbs (not batter). About 20-25 minutes.
  • Cool on wire rack at least 30 minutes.