Gluten-Free Flax Flour Macarons

Blend together the granulated sugar, cream of tartar, powdered sugar and flax flour (you can also use a blender to blend the ingredients)

Add the egg whites to a clean medium-sized bowl and beat them on low speed until foamy

Slowly sprinkle the sugar mixture over the egg whites as you beat (Increase the speed to medium and beat until soft peaks form)

Gently fold in the flax mixture until completely incorporated, scooping from the bottom and rotating the bowl as you fold (Don't overmix or your macarons will turn out flat)

Add your batter to a piping bag with a round tip or just a plastic bag with the tip cut off. Pipe small, uniform circles of batter about an inch apart. Let rest at room temperature for an hour.

Preheat your oven to 350 degrees and bake for about 12 minutes

Let the macarons cool completely. You can pipe or dab dollops of frosting on one shell, then top with another shell.