Pecan Pie Cookies

1/2 cup unsalted butter, softened

1/2 cup granulated sugar

1/4 cup brown sugar, packed

1 large egg

1 tsp vanilla extract

1 1/4 cups all-purpose flour

1/2 tsp baking powder

1/4 tsp salt

For the Pecan Filling:

1 cup chopped pecans

1/2 cup brown sugar, packed

1/4 cup corn syrup or maple syrup

1/4 cup unsalted butter, melted

1 tsp vanilla extract