Preheat your oven to 300°F (150°C). Line two baking sheets with parchment paper.
In a bowl, sift together the almond flour and powdered sugar.
In a clean bowl, beat the egg whites on medium speed until foamy. Gradually add granulated sugar, increasing the speed to high until stiff peaks form, about 5-7 minutes. Gently mix in the vanilla extract.
Fold the almond flour mixture into the meringue using a rubber spatula.
Divide the batter into two bowls. Color one portion red with gel food coloring and leave the other white.
Transfer each colored batter into separate piping bags. Pipe the red mixture onto half of the circles on the prepared baking sheets and the white mixture onto the other half.
Let the macarons sit for about 30-60 minutes at room temperature.
Bake for 15-18 minutes, rotating halfway through. Let them cool completely on the baking sheet.
In a bowl, beat the softened butter until creamy. Gradually add powdered sugar, vanilla extract, and heavy cream. Blend until smooth and fluffy. Fold in crushed freeze-dried strawberries.
Pipe a generous dollop of strawberry filling onto the bottom of a macaron shell, then gently sandwich it with another shell.
Notes
Serve on a festive platter and dust with powdered sugar for a snowy effect.