Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.

In a large mixing bowl, cream together softened butter and granulated sugar until light and fluffy. Add egg and vanilla extract, mixing until combined. Gradually add flour and baking powder until smooth.

Drop rounded portions of dough onto the prepared baking sheet, flattening each ball gently.

Bake for 9-12 minutes until edges are light golden brown. Watch closely to avoid overcooking.

Cool cookies on a wire rack after letting them sit on the baking sheet for 5 minutes.

Scoop strawberry ice cream into a bowl, mix in chopped strawberries.

Assemble sandwiches by scooping ice cream onto a cookie, adding fresh strawberries if desired, and topping with another cookie.

Freeze the assembled sandwiches for at least 30 minutes before serving.