Place whole freeze-dried strawberries into the food process to grind them down into powder. Or place it in a ziplock bag and use a rolling pin to crush it into powder.
Preheat oven to 375 F. Fit baking sheet with parchment paper. Set aside.
Combine flour, baking powder and salt. Whisk to combine.
Combine butter, sugar, and vanilla in a stand mixer bowl. Using a paddle attachment, mix on high until creamed, about 2 - 3 minutes. Scrape down the bowl as needed during mixing.
Add freeze-dried strawberry powder and mix on medium until well combined. Scrape down the bowl as needed.
Add egg and mix on medium-low until well combined, about 1 minute. Scrape down the bowl as needed.
Add dry ingredients to wet ingredients and mix on low. Increase speed to medium-low until dough pulls together on the paddle attachment and away from the bowl.
Use your hands to help adhere the dough together a bit more, and then place it on floured parchment paper. Sprinkle a bit more flour on top of the dough before placing another piece of parchment on top.
Roll the dough to the desired thickness with a rolling pin. Use cookie cutters to cut out as many as possible. Place on cookie sheet at least 1” - 2” apart.
Bake for 10 minutes, or until you see the bottom edges lightly browning. Remove from oven and allow to cool.
For strawberry sugar coating, combine freeze-dried strawberry powder and sugar in a bowl and whisk well.
Take a cooled cookie with the top facing down and rub it into the strawberry sugar mixture gently but firmly. This will help ‘color’ the cookie further into a pink hue. Then turn over and sprinkle the strawberry sugar mixture on top and then gently top off the excess.