Preheat oven to 400°. Write fortunes on small strips of paper (3-1/2x1/4-in.); set aside. Line a baking sheet with parchment paper. Using a pencil, draw two 3-1/2-in. circles on a sheet of parchment paper. Place paper, pencil mark down, on a baking sheet; set aside.

In a small bowl, beat butter, sugar, egg white and vanilla. Add gluten free flour; mix well. Spread 1 tablespoon batter over each circle. Bake 4-5 minutes or until lightly browned.

Slide parchment paper onto a work surface. Cover one cookie with a kitchen towel. Place a fortune in the center of the other cookie; loosen cookie from parchment paper with a thin spatula. Fold cookie in half over fortune strip so the edges meet; hold edges together for 3 seconds.

Place center of cookie over the rim of a glass; gently press ends down to bend cookie in middle. Cool 1 minute before removing to a wire rack. Repeat with second cookie. If cookies become too cool to fold, return to oven to soften for 1 minute. Repeat with remaining batter and fortunes.