Preheat your oven to 350°F (175°C).

Line a baking sheet with parchment paper.

In a mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.

Beat in the eggs one at a time, followed by the vanilla extract.

In another bowl, whisk together the flour and salt. Gradually add this mixture to the wet ingredients, mixing until just combined.

Using a cookie scoop or tablespoon, drop dough onto the prepared baking sheet and make a small indentation in the center of each cookie with your thumb.

Fill each indentation with about half a teaspoon of lemon curd.

Bake for 12 to 15 minutes, or until the edges are lightly golden.