Prep pans: Draw two large 7–8 inch circles on parchment paper and flip them over on baking sheets.
Sift: Sift almond flour and powdered sugar together twice into a large bowl.
Whip egg whites: In a clean bowl, whip egg whites until foamy. Gradually add granulated sugar and continue beating to stiff peaks. Add gel food coloring now if using.
Macaronage: Fold the almond-sugar mix into the meringue gently until batter flows like lava. When you lift the spatula, it should ribbon and disappear into the batter in 10 seconds.
Pipe: Fill a piping bag and pipe the batter within the circle templates. Use a spatula to smooth the tops if needed.
Rest: Tap trays to release air bubbles. Let them rest 30–60 mins until dry to the touch.
Bake: Preheat oven to 300°F (150°C). Bake 20–25 mins. Let cool completely before removing.
🔹 Make the Buttercream:
Beat butter until creamy.
Add powdered sugar slowly. Mix in vanilla, salt, and cream.
Beat on high for 3–5 minutes until fluffy.
🔹 Assemble:
Place one cooled shell on a serving plate.
Pipe buttercream over it in rosettes, rings, or swirls.