Nut-Free Macarons

Directions

1. 1
   Sift confectioners' sugar into a medium bowl. Sift in coconut flour.
2. 2
   Beat egg whites in a separate bowl using an electric mixer until white and foamy. Add white sugar slowly. Beat until mixture is glossy and forms stiff peaks.
3. 3
   Sift the coconut flour mixture into the egg whites, a few tablespoons at a time, folding after each addition. Batter should be thick and gooey and able to fall off a spoon slowly like lava.
4. 4
   Fit a piping bag with a coupler and a tip. Drop piping bag tip-down into a tall glass and fold edges down around the glass. Spoon batter into the bag. Gather edges and twist together.
5. 5
   Holding the tip at a 90 degree angle, pipe batter onto a greased baking sheet to form individual macaron shells. Tap baking sheet onto a countertop to remove air bubbles. Let sit until dry, 15 to 60 minutes.
6. 6
   Preheat the oven to 300 degrees F (150 degrees C).
7. 7
   Bake in the preheated oven until tops are firm, 15 to 20 minutes.
8. 8
   Puree raspberries in a food processor, adding water if using frozen raspberries. Strain out the seeds using a fine-mesh strainer.
9. 9
   Beat butter and 1/2 the confectioners' sugar in a bowl using an electric mixer until combined. Add the remaining 1/2 and beat until creamy. Add raspberry puree and heavy cream; mix well to make the frosting.
10. 10
    Spoon a small amount of frosting over the flat side of a macaron shell; cap with another shell. Repeat with the remaining filling and shells.