Using a large sieve, sift the almond flour and powdered sugar together into a large bowl. Then sift the mixture a second time into another large bowl. Set aside.: The airiness of the sifted mixture is crucial, you should see a fine powder fall like soft snow into the bowl and the aroma will be subtly nutty and sweet. Sifting twice removes any stubborn lumps and ensures the dry mix is homogeneous, which prevents heavy spots in the batter that could make the shells crack during baking. You want both tools and patience here, as the texture directly influences how smooth the tops will be after baking. A common mistake is skimping on sifting, which leads to bumpy shells and uneven feet.
In a large bowl, pour in the egg whites and cream of tartar. Beat the egg whites on medium-low speed until soft peaks form.: As you beat, watch the whites change from glossy liquid to opaque peaks, with a faint sweet egg scent. Soft peaks will gently curl over when you lift the whisk and the mixture will still shimmer, indicating it can incorporate sugar without collapsing. The cream of tartar stabilizes the foam and gives the whites a silkier feel. Overbeating here makes the whites grainy and dry, so stop at the right sheen to keep the meringue elastic for folding.
Add the granulated sugar to the eggs. Continue beating until the mixture almost reaches stiff peaks.: Adding sugar gradually dissolves into the whites, smoothing the meringue and building strength, resulting in a glossy, satiny texture. You should hear a slight change in the mixer sound as the foam tightens and see the peaks hold more shape. If the sugar feels gritty between your fingers, beat a bit longer until it dissolves. Avoid adding the sugar too fast, as that can deflate the foam and prevent proper volume.
Add the red gel food coloring and peppermint extract and beat until stiff peaks form, and you can tip the bowl upside down and nothing falls out.: The meringue will deepen to the chosen red, glossy and dense, and the peppermint will perfume the air with a cool note. Stiff peaks should stand upright without drooping, and the bowl inversion test confirms stability. This firmness is key so the shells keep their shape when piped. A frequent error is overcoloring or using liquid dye, which introduces excess moisture and weakens the meringue.
Fold in a third of the dry ingredients to the egg white mixture with a spatula until completely mixed. Fold in the rest of the ingredients until the batter can run off the spatula forming a “figure-8” without breaking. Be careful not to overmix the batter or you will lose air bubbles from the egg whites.: The folding phase is all about feel, not speed; you should see the batter slowly fall in a ribbon and settle back, with a slightly glossy sheen. The figure eight test shows the right viscosity where the batter flows but still holds some tension. This balance ensures proper spreading and foot development in the oven. If you overmix, the batter becomes too loose and the shells will flatten and lack feet, while undermixing yields domed centers and cracks.
Scoop the batter into a large piping bag fitted with a large round tip (I used a Wilton 2 A tip). Pipe 1 – 1 1/2 inch circles onto parchment-lined baking sheets, leaving about 1 – 2 inches between each macaron. You can also use a silicone macaron mat.: As you pipe, aim for even pressure so each circle matches the others in size, with a satiny surface that reflects light softly. You should hear the quiet whoosh of batter leaving the bag and see smooth rims form on each circle. Keeping consistent spacing prevents them from sticking together while baking. A mistake here is applying inconsistent pressure, which creates uneven sizes and baking times for different cookies.
Tap the pan on the counter at least 5 times to release air bubbles to the top of the macarons. Use a toothpick to pop any bubbles on the surface.: Tapping helps trapped air escape, leaving a smoother top and preventing large air pockets that cause blisters during baking. After taps, inspect each cookie for small domes and gently pop them with a toothpick so the surface becomes clean and uniform. You will notice the batter settle a little, and the sound of tapping changes as air evacuates. Forgetting this step can leave unsightly bubbles and uneven feet.
THIS IS IMPORTANT! Allow the macarons to rest in a dry area for 30 minutes to an hour until the tops of the macarons are no longer tacky to the touch.: Resting forms a thin skin that helps the shells rise evenly and develop feet, and you'll feel the tops go from tacky to dry under your fingertip. The air should be calm and dry; I sometimes set mine under the oven hood to encourage drying. If you skip or shorten resting, shells may crack or fail to develop proper feet, so patience pays off here.
Preheat the oven to 315°F/157°C.: Preheating to the correct temperature ensures the macarons bake quickly enough to set their structure while forming feet, and the smell of warm air will shift from neutral to faintly toasty. An oven thermometer helps confirm accuracy because many ovens run hot or cold. If your oven is wrong, shells may brown too fast or not rise properly, so verify the temperature before baking.
Bake the macarons, one cookie sheet at a time, for 17 minutes. The cookies should rise and form “feet” as they bake.: In the oven the macarons will go through a dramatic transformation, swelling slightly and producing delicate ruffled feet at their bases, while the tops stay smooth. You should see no wobble when you nudge the rack and the aroma is a light baked almond note. Baking one sheet at a time keeps air circulation uniform; overcrowding or multiple sheets can yield uneven heat and inconsistent feet.
Let the macarons cool on the pan set on top of a cooling rack for 10 minutes. Then remove the pan, keeping the macarons on the parchment paper, and leave on the cooling rack until completely cool, at least 10 more minutes. The macarons should peel off of the parchment paper leaving little to no cookie residue on the parchment paper.: As they cool, the shells firm and the bottoms detach from the parchment with a satisfying gentle lift, revealing smooth undersides. You should wait until they are fully cool to avoid breaking the fragile shells. Rushing removal can cause sticking and cracked bottoms, so let the ambient air finish the job for a clean lift.
In a large mixing bowl, cream the softened butter with a handheld mixer on medium speed. Gradually add the powdered sugar until it is well mixed with no lumps.: The butter should become airy and pale, and as powdered sugar is incorporated the mixture becomes thicker and sweeter, with a smooth, velvety texture. This step sets the stage for a lump free buttercream; if you notice graininess, keep beating until it disappears. Adding the sugar too quickly can make the mixture dusty and uneven.
Add the cocoa powder, and mix until completely incorporated. Then add the peppermint extract and 1 tablespoon of heavy whipping cream. Mix well on medium speed. If the buttercream is still thick or clumpy, add in a second tablespoon of cream. Mix until the texture is smooth and creamy.: The bowl will fill with the warm, bittersweet scent of cocoa balanced by cool peppermint. Adding cream slowly lets you find the ideal piping consistency, and the second tablespoon is there to rescue an overly stiff frosting. Taste and texture matter here, since the buttercream must hold its shape while remaining soft on the palate. Over thinning creates a filling that seeps out of the sandwiches.
Add the buttercream to a piping bag and pipe the buttercream on the flat side of half of the macaron cookies. Then place the other half of the macarons on top of the buttercream to form a macaron sandwich.: Piping creates neat, controlled dollops so each sandwich has an even amount of filling, and you should hear a soft plop as the buttercream meets the shell. Press the top shell gently to spread the filling to the edges without squeezing it out. Uneven piping can lead to squashed cookies or crowns of filling, so aim for consistent pressure and portion size.
Roll the macarons in the crushed candy canes to coat the edges.: The crushed candy will cling to the buttercream rim, adding crunch and a burst of peppermint that complements the interior. You should feel little crunch under your teeth and see a festive rim of white and red specks. Work on a plate to catch stray pieces, and press gently so the candy adheres without cracking the shells. Using too large candy shards can nick the delicate shells, so aim for a fine crush.