Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large bowl, cream butter and sugar together until light and fluffy. Stir in the vanilla extract.
Gradually add flour, mixing until just combined. The dough will be soft.
Roll dough into 1-inch balls and place on prepared baking sheet about 2 inches apart. Make an indentation in the center of each cookie using your thumb or a small spoon.
Fill each indentation with raspberry preserves.
Bake in preheated oven for 10-12 minutes, or until edges are lightly golden. Let cool on baking sheet for a few minutes before transferring to a wire rack to cool completely.
Notes
Store cookies in an airtight container for up to a week.