Ingredients

  • 1 cup all-purpose flour (original recipe calls for 1 1/2 cups all-purpose flour, about 6 3/4 ounces)
  • 12 cup whole wheat flour (not in original)
  • 23 cup granulated sugar (original recipe calls for 1 cup)
  • 1 12 teaspoons baking powder
  • 1 12 teaspoons ground cinnamon
  • 12 teaspoon salt
  • 34 cup 1% low-fat milk
  • 2 tablespoons butter, melted
  • 1 teaspoon vanilla extract
  • 1 large egg, lightly beaten
  • 1 12-2 cups diced peeled granny smith apples (original recipe calls for 1 cup)
  • cooking spray
  • 14 cup packed brown sugar
  • 2 tablespoons all-purpose flour
  • 12 teaspoon ground cinnamon
  • 2 tablespoons chilled butter, cut into small pieces

Method

  • To prepare cake, lightly spoon the flour into dry measuring cups; level with a knife.
  • Combine flour and next 4 ingredients (through salt) in a large bowl, stirring with a whisk.
  • Make a well in center of mixture.
  • Combine milk, melted butter, vanilla, and egg, stirring with a whisk; add to flour mixture, stirring just until moist.
  • Fold in apple.
  • Pour batter into an 8-inch square baking pan coated with cooking spray.
  • To prepare streusel, combine brown sugar, 2 tablespoons flour, and 1/2 teaspoon cinnamon; cut in butter with a pastry blender or 2 knives until mixture resembles coarse meal.
  • Sprinkle streusel evenly over batter.
  • Bake at 350 F for 45 minutes or until a wooden pick inserted in center comes out clean.
  • Cool in pan 10 minutes on a wire rack before serving.
  • Serve warm.