Ingredients
Equipment
Method
Shape and bake the shells
- Heat the oven to 300°F with a rack in the center.
- Line two 12x17-inch rimmed baking sheets with parchment marked on the underside with 20 tree outlines each, about 1 3/4 inches tall and 1 1/2 inches wide.
- Sift the almond flour and 4 1/2 ounces powdered sugar into a bowl, then set aside.
- Beat the egg whites and cream of tartar in a clean bowl on medium speed until foamy, then gradually beat in the granulated sugar.
- When soft peaks form, add the green gel food coloring and beat on medium-high until the meringue is glossy and holds stiff peaks.
- Fold the dry mixture into the meringue in three additions, stopping when the batter falls from the spatula in a thick ribbon that settles back in about 10 to 15 seconds.
- Transfer the batter to a piping bag fitted with a 1/4-inch plain round tip and pipe a continuous zigzag from the pointed top to the broad base of each tree outline, letting the ridged lines touch.
- Tap each sheet firmly on the counter and let the shells stand 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 17 minutes, until the tops are set, feet have formed, and a shell does not slide when lightly nudged.
- Cool on the sheet for 15 minutes, then carefully peel the shells from the parchment.
Make the filling
- Beat the softened butter until creamy, then gradually beat in the remaining 3 ounces powdered sugar, heavy cream, vanilla extract, and salt until fluffy.
Fill and mature the macarons
- Pipe or spread about 1 teaspoon of filling onto the flat side of half the shells, then top with the remaining shells and press gently to sandwich.
- Arrange the macarons in an airtight container and refrigerate for at least 12 hours and up to 2 days.
- Bring to room temperature for 20 minutes before serving.
Notes
For the ridged tree texture, pipe a continuous zigzag and stop folding as soon as the batter falls in a thick ribbon that settles back in about 10 to 15 seconds. Refrigerate in an airtight container for up to 2 days; freezing is suitable for longer storage. For a dairy-free filling, use dairy-free butter and cream.
