Use an electric mixer to combine 1 cup of butter, 2 cups of flour, 1/2 cup of powdered sugar, 3 Tbsp of freeze-dried strawberry powder, 1/2 tsp of fine salt, and a small drop of pink gel food coloring (optional). The mixture might look a bit crumbly at first, but it will eventually form a soft dough once it's fully mixed. If the mixture isn't coming together, you may want to heat it in the microwave for a couple of seconds (literally 2-3 seconds, you don't want to melt the butter!) to help soften the butter.
Scoop the dough on top of a large piece of plastic wrap and flatten it out into a rectangle that's about 1/4 inch tall to make it easier to roll out once it's chilled. Wrap tightly and place in the fridge for an hour, or until it's firm.
Preheat the oven to 350°F/175°C and line 2 large baking sheets with parchment paper or Silpat mats while the cookie dough chills.
Unwrap the cookie dough and lay the plastic wrap out flat on your counter. We will be rolling out the cookie dough on the plastic wrap to make cleanup a breeze and to make it easier to cut out the cookies. Cut out shapes with a 2-inch heart-shaped cookie cutter. The cookies don't spread much as they bake, so you can place them about 1 inch apart. Knead the dough scraps back together, then roll the dough out again and cut out more cookies until you've used up all the dough.
Bake one tray at a time for 13-16 minutes. Rotate the pan halfway through to help them bake evenly. Then place the pan on a wire rack and let the cookies cool fully on the pan.