• Preheat the oven to 300°F.
• Separate the eggs carefully, making sure no egg yolk gets into the whites. Place the egg whites in the bowl of an electric mixer fitted with the whisk attachment. Beat for approximately 1 minute, or until foamy.
• Add the meringue powder, if using. Slowly add the granulated sugar in three additions, mixing well after each addition on medium speed.
• Increase the mixer speed to medium-high and continue mixing for approximately 5 minutes, or until the meringue forms very stiff peaks and holds its shape.
• Add a few drops of red gel food coloring and mix until the desired color is reached.
• Sift the almond flour, powdered sugar, and egg white powder (if using) into a clean bowl. Discard any large pieces left behind.
• Add the sifted dry ingredients to the meringue. Stir gently until incorporated, then fold the mixture with a spatula. Scrape the bottom and sides of the bowl regularly to ensure no dry ingredients remain.
• Continue folding until the batter flows from the spatula in a smooth ribbon and blends back into the mixture within approximately 20 seconds. The batter should have a thick, lava-like consistency.
• Transfer the batter to a pastry bag fitted with a large round piping tip. Pipe circles onto a silicone macaron mat or parchment-lined baking sheet, holding the bag approximately ½ inch above the surface.
• Firmly tap the baking sheet against the counter several times to release air bubbles. Pop any remaining bubbles with a toothpick.
• Allow the piped shells to rest for at least 30 minutes, or until the tops are no longer sticky or tacky.
• Bake for approximately 12 minutes. If baking more than one tray at a time, rotate the trays halfway through baking.
• Allow the shells to cool completely on the baking sheet before carefully removing them. Store the shells in an airtight container until ready to fill.

Chocolate Ganache

• Place the dark chocolate and heavy cream in a microwave-safe bowl. Microwave for 1 minute, then stir thoroughly.
• If needed, continue heating in 15–30 second increments, stirring after each interval, until the chocolate has melted and the ganache is smooth.
• Transfer the ganache to a piping bag and allow it to cool slightly.

Decoration and Assembly

• Pair the cooled macaron shells with another shell of a similar size.
• Use a black edible marker to draw a thick line across the centre of half of the shells. Add two small dots above the line to create the belt detail.
• Melt the yellow candy melts in a microwave-safe bowl in 15-second increments, stirring between each interval until smooth.
• Transfer the melted candy to a piping bag and allow it to cool slightly. Cut a very small opening in the end of the bag and pipe a square over the centre of the black line to create Santa’s belt buckle. Allow it to set.
• Turn the undecorated shells upside down and pipe a mound of chocolate ganache onto each one.
• Place a decorated shell on top and gently press down until the filling reaches the edges.
• For the best texture, refrigerate the assembled macarons for approximately 24 hours before serving.