Ingredients

The following ingredients have 24 Servings
  • 1 cup unsalted butter
  • 1 cup water
  • 2 cups + 2 tablespoons all-purpose flour
  • 2 cups granulated sugar
  • 1/2 teaspoon kosher salt
  • 1 teaspoon baking soda
  • 1 teaspoon cinnamon
  • 1/2 cup sour cream
  • 2 large eggs
  • 1 medium apple (, diced small or grated (about 1 1/4 cups))
  • 3 tablespoons whole milk
  • 1/4 cup unsalted butter
  • 2 cups powdered sugar
  • 1/2 teaspoon vanilla extract
  • 2 tablespoons caramel sauce

Instruction

  • Preheat oven to 350 degrees F. Lightly coat a 10x15 inch jelly roll pan with nonstick cooking spray. (See note below if you don't have a jelly roll pan.)
  • In a medium saucepan, bring butter and water to a boil, stirring frequently to prevent burning. Remove from heat and allow to cool.
  • In the meantime, in a large bowl, whisk together the flour, sugar, salt, baking soda, and cinnamon.
  • In a separate bowl, whisk together the sour cream and eggs.
  • Combine the wet ingredients with the dry (batter will be thick.)
  • Fold in the diced apples.
  • Gradually stir in the warm melted butter and mix well until combined.
  • Pour batter evenly into the prepared pan (batter will be loose.)
  • Carefully transfer to the oven and bake for 25-27 minutes, until the center of the cake springs back when touched. Let cool until just slightly warm.
  • Make the icing by combining the butter and milk in a medium microwave safe bowl; microwave for 45 seconds, and then in 15 second intervals until butter is melted. Whisk to combine. Add in the powdered sugar, vanilla, and caramel sauce; whisk to combine (add more powdered sugar or milk to get the right consistency - you want the icing to pour, but thick enough that it doesn't pool over the sides of the pan.)
  • Pour icing over the cake while it’s cooled, but still slightly warm. Allow icing to set completely before slicing
  • Cut into squares and enjoy!
  • NOTE: If you don't have a jelly roll pan, many readers have had success making it in a 9x13 baking dish and adding 10 minutes or so to the baking time.