Line two baking sheet pans with a baking mat. Measure all ingredients using a digital kitchen scale. Get all tools ready before starting this recipe.
In the other mixing bowl, sift together almond flour and powdered sugar. You can sift a few times if needed, depending on the almond flour you are using.
Add egg whites to a mixing bowl of a stand mixer. Whisk on low speed. Start adding sugar in a few parts.
Change the speed in the mixer speed to medium and set the timer for 15 minutes. Add food coloring. Meringue should be shiny and have stiff peaks.
Add sifted dry ingredients to the French meringue and fold the batter using a spatula. Do not overfold! Check the batter every 5 folds. The batter is ready when it flows fast from the spatula.
Transfer the batter to the piping bag with a round tip.
Pipe macaron shells on the prepared baking mats. Hold the piping bag straight and apply pressure when you start piping, then stop when you reach the desired size of the macaron shell.
Lightly tap the baking tray to remove air bubbles. Use a toothpick or a baking needle to remove the bubbles from the piped macaron shells.
Let macaron shells rest (dry) on the countertop for about 15 minutes.
Meanwhile, preheat the oven to 300°F (150 °C).
Bake macaron shells in a preheated oven for 14-16 minutes. Baking time and temperature may be different, depending on your oven.
Remove the baking tray from the oven and let the macaron shells cool to room temperature before removing them from the mat.
Pair macaron shells of similar sizes before filling them.
How to Make Pistachio Cheesecake Filling for Macarons
In a stand mixer fitted with the paddle attachment, cream together softened butter and cream cheese.
Add pistachio paste and cream again until smooth and creamy.
Then add powdered sugar in a few parts and continue beat untill combined.
After that, add salt and beat again for a few seconds. Transfer frosting into a pastry bag with a round piping tip.
How to Assemble Macarons
Place paired macarons on the countertop or the baking tray.
Pipe Pistacio Cheesecake Filling on the flat side of one macaron shell.
Sandwich a macaron with another macaron shell. Make sure there is no filling coming out from the sides of the macaron.
Place assembled macarons in the airtight container and refrigerate for 8-12 hours. Macarons need to "mature" before you can enjoy them.
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Notes
Measure all ingredients correctly using a digital kitchen scale.