Peanut Butter and Jelly Thumbprints

Preheat oven to 350ºF. Line 2 baking sheets with parchment paper.

In a medium bowl, add flour and salt, mix until combined. Set aside.

In a large bowl, beat butter and sugar. Beat in egg yolk and vanilla extract. Add flour mixture, and beat until combined.

In a small bowl, beat egg whites until frothy. On a plate, add chopped nuts.

Roll dough into 1″ balls. Roll into egg white mixture, then into nuts. Place on baking sheet and make a thumb print in the middle (I used the back of a teaspoon).

Bake for 8-10 minutes or until nuts are lightly browned. Place on cookie rack to cool. Once cool, evenly divide the peanut butter into the thumbprint, then top with jam.