Jam Thumbprints

Ingredients

• 2/3 cup butter
• 1/3 cup white sugar
• 2 egg yolks
• 1 teaspoon vanilla extract
• 0.5 teaspoon salt
• 1.5 cups all-purpose flour
• 2 egg whites, lightly beaten
• 0.75 cup finely chopped walnuts
• 1/3 cup strawberry preserves

Steps

1. Preheat the oven to 350 degrees F (175 degrees C). Lightly grease cookie sheets or line them with parchment paper.
2. In a large bowl, cream together butter and sugar until light and fluffy. Beat in egg yolks, vanilla, and salt. Gradually mix in flour.
3. Shape dough into 3/4-inch balls. Dip in lightly beaten egg whites, then roll in finely chopped walnuts. Place 1 inch apart on the prepared cookie sheets. Press down the centers of each with your thumb.
4. Bake for 15 to 17 minutes, or until golden brown. Cool on baking sheet for 5 minutes, then remove to a wire rack to cool completely. Just before serving, fill centers of cookies with strawberry preserves.