01 -
Preheat the oven to 350°F (175°C).
02 -
Cream together the softened butter and powdered sugar until smooth and fluffy.
03 -
Add the vanilla extract and mix well. Gradually blend in the gluten-free flour and salt until a soft dough forms.
04 -
Fold in the finely chopped rhubarb. Roll the dough into small balls, place on a parchment-lined baking sheet, and flatten each slightly.
05 -
Bake for 12-15 minutes until lightly golden brown.
06 -
Cool the cookies on a wire rack before serving.