In a standing mixer add the butter and sugar, mix until combined, then turn the mixer on high and whip for 1-2 minutes until light and fluffy in texture and color. You will want to stop the mixer and scrap down the sides of the bowl every 30 seconds or so.
Add the egg and raspberry extract, mix until combined.
Pour the chopped freeze dried raspberries, flour and salt into the mixing bowl.
Mix on low until the dough forms.
Remove from the bowl and wrap in plastic wrap. Place in the fridge to chill for 1-3 hours. **Tip: if you plan to cut the cookies into shapes, I like to roll the dough out before I chill it between parchment paper and plastic wrap, then place on a cookie sheet & put in the fridge to chill. That way you don't fight cold cookie dough to roll out.
After the dough has chilled, preheat your oven to 350 degrees
Cut the cookie dough into the desired shapes and place on a light metal cookie sheet lined with parchment paper
Bake for 10 minutes. Remove and allow to rest on the pan for 5 minutes before removing and allowing to fully cool down.