Preparation Steps

• Preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper.
• In a medium bowl, whisk together the flour, sugar, and salt. Add the softened butter and mix with a pastry cutter or fork until the mixture resembles coarse crumbs.
• Stir in the egg yolk and vanilla extract until a soft dough forms. Divide the dough into 24 equal portions and roll each into a ball.
• Place the dough balls on the prepared baking sheets, spacing them about 2 inches apart. Use your thumb (or the back of a wooden spoon) to make an indentation in the center of each cookie.
• Fill each indentation with about 0.5 teaspoon of jam. Bake for 12–15 minutes, or until the edges are lightly golden.
• Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.