Ingredients

• 2 1/4 cups all-purpose flour
• 1 cup granulated sugar
• 2 1/2 teaspoons baking powder
• 1/4 teaspoon cinnamon
• 1/4 teaspoon salt
• 1 cup milk
• 1/2 cup sour cream
• 2 eggs
• 1/2 cup unsalted butter melted
• 1/2 teaspoon vanilla

Apple Filling:

• 2 3/4 cups thinly sliced cored peeled Granny Smith apples (2 or 3)
• 1 tablespoon granulated sugar
• 1 tablespoon all-purpose flour

Cinnamon Streusel:

• 3/4 cups all-purpose flour
• 1/3 cup unsalted butter melted
• 1/4 cup packed brown sugar
• 1/4 cup granulated sugar
• 2 teaspoons ground cinnamon