1/3 C flour
3/4 C creamy peanut butter
3/4 C sugar
1 egg, lightly beaten
Requires 3 hours of chill time!
Beat together peanut butter, sugar and egg in a bowl at medium speed. Add flour and stir well. Shape dough into 20 1″ balls and place on greased cookie sheets. Leave about an inch between each cookie. Press thumb into the center of each cookie. Cover sheet with plastic wrap and chill for 3 hours.
Preheat oven to 375° F. Bake cookies for about 12 minutes. Remove from oven and spoon a bit of jam into each crevice.