Ingredients
Equipment
Method
Make the shells
- Preheat the oven to 300°F with a rack in the center.
- Line two 18x13-inch baking sheets with parchment paper.
- Sift the almond flour and confectioners' sugar into a medium bowl, then whisk to combine.
- In a clean bowl, beat the egg whites and cream of tartar with an electric mixer on medium speed until foamy.
- Gradually beat in the granulated sugar, then increase to high and beat until stiff, glossy peaks form, adding the green gel food coloring near the end.
- Fold the almond flour mixture into the meringue in three additions, folding just until the batter flows in a thick ribbon and settles back into itself within about 10 seconds.
- Transfer the batter to a piping bag fitted with a 1/2-inch round tip and pipe 1 1/2-inch rounds onto the prepared sheets, spacing them about 1 inch apart.
- Tap each sheet firmly on the counter and pop visible air bubbles with a toothpick.
- Let the shells stand at room temperature for 30 to 60 minutes, until the tops feel dry and do not stick to a fingertip.
- Bake one sheet at a time for 14 to 16 minutes, until the tops are set and do not shift when lightly touched.
- Cool completely on the sheet before lifting the shells from the parchment.
Make the peppermint filling
- Put the white chocolate in a heatproof bowl.
- Heat the heavy cream in a small saucepan until steaming, then pour it over the chocolate and let stand for 2 minutes.
- Stir the mixture until smooth, then stir in the peppermint extract.
- Refrigerate for 20 to 30 minutes, stirring once or twice, until thick enough to pipe.
Fill and chill
- Pair shells by size and pipe about 1 teaspoon of filling onto half of them.
- Sprinkle the filling evenly with the crushed candy canes, then top with the remaining shells.
- Refrigerate the macarons in an airtight container for at least 24 hours.
- Let them stand at room temperature for 20 minutes before serving.
Notes
For neat shells, fold only until the batter flows in a thick ribbon and settles back into itself within about 10 seconds. Refrigerate in an airtight container for up to 5 days; freezing is suitable for up to 1 month. For a dairy-free filling, use dairy-free white chocolate and coconut cream.
