• Preheat oven to 350°

For the Lemon Cookies

• In a medium mixing bowl, beat butter, cream cheese and sugar together until well incorporated.
• Add egg, lemon peel, lemon juice and mix well.
• Using a separate bowl, whisk flour and baking powder together and then add to cream cheese mixture and mix well.
• Cover with plastic wrap and chill for 1 hour.
• Roll dough into 1 inch balls, then roll in the graham cracker crumbs and place on ungreased cookie sheet.
• Using your finger, make an indentation in the center of the cookies.

For the Cheesecake Filling

• Beat cream cheese, sugar, grated lemon peel, egg yolk, and sour cream together in a small mixing bowl until smooth and creamy.
• Fill each cookie with ½ tsp of filling.
• Bake for approximately 20 minutes. Remove from oven and place on wire racks to cool.