Prepare a baking sheet with parchment paper.
In the bowl of a stand mixer with the paddle attachment, cream the butter and sugar together until fluffy. Add in the egg and vanilla extract, mixing until fully combined.
Add freeze dried fruit to a blender or food processor and grind into a fine powder. If needed, use a mortar and pestle (or a rolling pin) to grind down any large chunks left.
Mix the flour, salt, and fruit powder together in a separate bowl, then combine with wet ingredients and mix well to form a dough.
Use a cookie scoop to portion the dough, roll into 12 smooth balls, and arrange them on the baking sheet. Gently press your thumb, knuckle, or the back of a spoon on top of each dough ball to make a circular indent.
Chill the sheet of cookies for at least 30 minutes (or overnight).
Preheat the oven to 350ºF and bake cookies for 12 minutes, scooting after baking if needed. Let the cookies cool completely before adding your jams or curds to each one!