Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
In a large bowl, cream butter and sugar until light and fluffy.
Add eggs one at a time, mixing well after each addition.
Mix in strawberry extract (or gelatin powder), vanilla extract, and food coloring if using.
Gradually add dry ingredients to the wet mixture, mixing just until combined.
Scoop dough into tablespoon-sized balls and roll each in granulated sugar.
Place dough balls on prepared baking sheets, spacing them 2 inches apart.
Bake for 10–12 minutes, until edges are set and centers look slightly soft.
Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.