Ingredients
Equipment
Method
Prepare and chill the dough
- Heat the oven to 350°F.
- Line two baking sheets with parchment paper.
- In a large bowl, beat the butter and sugar until light and fluffy, about 2 minutes.
- Beat in the egg yolk and vanilla until combined.
- Add the flour and salt and mix just until a soft dough forms.
- Cover the dough and chill for 30 minutes.
Shape and bake the cookies
- Roll the dough into 24 tablespoon-size balls.
- Arrange the balls about 2 inches apart on the prepared baking sheets.
- Press a deep indentation into the center of each ball with your thumb.
- Spoon about 1/2 teaspoon jam into each indentation.
- Bake both sheets for 12 to 15 minutes, swapping their oven positions halfway through, until the cookie edges are lightly golden.
- Cool the cookies on the baking sheets for 5 minutes.
- Transfer the cookies to a wire rack to cool completely.
Notes
For clean thumbprints, press a deep indentation into each dough ball before filling. Store in an airtight container in the fridge for up to 5 days; freeze yes, in an airtight container. For a gluten-free variation, use a measure-for-measure gluten-free flour blend.