Beat butter with sugar, mix in lemon extract.

Add in flour and blend together. You can use your hands if necessary.

If the dough gets too warm from your hands you can chill it for 10 minutes.

You can line the mini cupcake papers in a mini cupcake pan if desired. You don't need to spray the pan if you aren't using paper liners, they remove nicely.

Use a 1 tablespoon scoop to portion out the dough, and press it into mini muffin/cupcake pans. Press it with a tart shaper, or the end of a rolling pin, or back of a spoon.

Bake at 300 degrees for 15 minutes.

Allow the cookies to cool completely before filling them with lemon curd.