Ingredients ▢1 cup unsalted butter softened (227g) ▢¾ cup granulated sugar (150g) ▢2 large egg yolks ▢1 teaspoon vanilla extract ▢½ teaspoon salt ▢3 cups all-purpose flour (360g) ▢⅓ cup fruit jam (strawberry, raspberry, or apricot jam) Beat butter and sugar, then add the egg yolks, vanilla, and salt, and beat until well combined. Gradually add in the flour and beat just until combined. Freeze for 30 min before baking. Bake at 375F for 12-14 minutes.