Making Spring Blossom Thumbprint Cookies is an enjoyable experience that yields delicious results. Follow these simple steps:

1. Preheat Your Oven: Begin by preheating your oven to 350°F (175°C). Line two baking sheets with parchment paper.
2. Cream Butter and Sugar: In a large mixing bowl, beat the softened butter and granulated sugar together until light and fluffy.
3. Add Egg Yolks and Vanilla: Mix in the egg yolks and vanilla extract until fully incorporated.
4. Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour and salt. Gradually add the dry mixture to the wet ingredients, mixing until a soft dough forms.
5. Shape the Cookies: Use your hands to roll the dough into 1-inch balls and place them on the prepared baking sheets, spacing them about 2 inches apart.
6. Create the Thumbprint: Gently press your thumb into the center of each cookie ball to create an indentation.
7. Fill with Preserves: Spoon about 1/2 teaspoon of fruit preserves into each thumbprint, filling it generously.
8. Bake: Place the baking sheets in the preheated oven and bake for 12-15 minutes, or until the edges are lightly golden.
9. Cool the Cookies: Remove the cookies from the oven and let them cool on the baking sheets for about 10 minutes before transferring them to wire racks to cool completely.
10. Dust with Powdered Sugar: If desired, dust the cooled cookies with powdered sugar for a beautiful finishing touch.

By following these steps, you’ll create a batch of Spring Blossom Thumbprint Cookies that are sure to delight everyone!