Preheat oven to 325°F (160°C) and line a baking sheet with parchment.
Pulse freeze-dried strawberries into a fine powder using a grinder.
Cream butter and sugar until light, then mix in vanilla and strawberry powder.
Add flour and salt; mix just until combined into a soft dough.
Roll dough and cut into desired shapes or form into rounds.
Bake for 18–22 minutes until edges are lightly golden.
While cookies cool, mix powdered sugar, strawberry powder, and milk into a smooth glaze.
Drizzle or dip cooled cookies in glaze, then let set completely.