Preheat oven to 350°F and line two baking sheets with parchment. With a mixer, cream together butter and Sugar In The Raw Organic White® until light and fluffy. Add vanilla and combine. Scrape down the sides of the bowl. Add flour and salt, and mix on low speed until a smooth dough forms. Remove the dough to a lightly floured work surface and roll 1/4” thick, dusting the dough with flour if needed to prevent sticking.
Use an egg-shaped cookie cutter to cut dough into shapes. Roll out any scraps and cut into more shapes. Use a small round cutter to cut a hole in the wide end of every other cookie (for each sandwich cookie, you’ll need one solid cookie and one cut-out cookie). Place on baking sheets and bake until just starting to brown, about 12-15 minutes. Cool completely.
Turn over solid cookies so the bottom side is up. Spread lemon curd onto each cookie leaving a 1/4” border. Dust the cut-out cookies with powdered sugar, then top each lemon curd cookie with a cut-out cookie.