Prep: Line two baking sheets with parchment paper. Preheat oven to 170°C (340°F).
Cream: In a large bowl, beat softened butter and powdered sugar until smooth and creamy. Mix in the egg yolk and vanilla until combined.
Mix: Add flour and salt, stir until the dough comes together. Do not overmix.
Shape: Scoop 1 tablespoon of dough, roll into a ball, and place on the prepared baking sheet. Slightly flatten each ball. Press the center with your thumb (or the back of a spoon) to make a small well. If the dough feels too soft, chill for 30 minutes.
Fill & Bake: Spoon a little jam into each indentation. Bake for 12–15 minutes, until pale but slightly golden underneath.
Cool: Let cookies rest on the pan for 5 minutes, then transfer to a wire rack. Dust with powdered sugar if desired.
Video
Notes
Jam Options: Raspberry is classic, but apricot, strawberry, or even lemon curd all work beautifully.
Chilling Dough: If the dough spreads too much, chill for 30–60 minutes before shaping.
Prevent Jam Overflow: Don’t overfill; jam expands slightly while baking.
Make Ahead: Bake plain cookies and fill with jam after baking for a neater look.
Variations:
Roll dough balls in chopped nuts (almonds, hazelnuts, or pecans) before baking.
Add ½ teaspoon almond extract for a different flavor profile.
Drizzle cooled cookies with melted chocolate for a festive touch.
Storage: Keep in an airtight container at room temperature for up to 4 days. For longer storage, refrigerate up to 1 week or freeze for up to 2 months.