• Preheat the oven to 350°F

Make the Cookie Dough:

• Combine the brown sugar, ½ cup of butter and ½ cup of white granulated sugar in a large mixing bowl. Use an electric hand mixer on medium speed to whisk the butter and sugars together for about 2 minutes, or until smooth and creamy.
• Add the egg and vanilla extract. Whisk for another 2 minutes, ensuring that the egg is fully incorporated with the creamed butter.
• Add the baking powder, baking soda, and 1 ½ cups of flour. Reduce the speed of your mixer to keep the flour from splattering and gently whisk the dry and wet ingredients together until just combined. Set aside.

Make the Streusel Topping:

• Make your streusel topping by combining the melted butter, flour, and granulated sugar. Use your hands or a fork to mix the ingredients until it resembles coarse wet sand. Set aside.

Assemble the Cookies:

• Divide your cookie dough into 12 large balls and flatten each one into a disc about ½ inch thick. Create a shallow indent in the center of each cookie.
• Space your cookies about 1 ½ inches apart on a large baking sheet.
• Add a spoonful of pie filling to each indent and then top each cookie with a generous spoonful of the streusel topping.

Bake the Cookies:

• Bake your cookies for 12 minutes and then allow them to cool on the pan for 5 minutes.
• After 5 minutes you can transfer your cookies to a wire cooling rack.