In a food processor, pulse together almond flour and powder sugar making sure all the big chucks are broken down. Add to a large bowl.
Add the first 110g of eggs whites to the almond and powder sugar mixture. Mix until it forms a paste.
Add the second 110g of egg whites to a mixer. Run at low speed. While the sugar mixture is heating.
Heat sugar and water together. Using a candy thermometer once the sugar mixture hits 240° remove from heat.
While the egg whites are running at a medium speed, once it starts to look frothy slowly stream in the sugar to make an Italian meringue. Add the red food color gel to the mix. It took 6-7 drops to get a dark red. The Italian meringue should have glossy peaks.
Fold in sections the Italian meringue to the paste. Folding it gently around the edges through the center. The batter will look runny with a ribbon consistency.
Spoon the macaron batter into a piping bag with a round piping tip. I used Wilton 1A.
On prepared baking sheets, Pipe batter in 1½in rounds with 1inch apart from one another. Bang the pan couple of times to get any air bubbles out. Also, use a toothpick to get any remaining bubbles.
Let the macarons sit out until they are dry. This could take as little as 30 minutes or up to an hour.
Before baking, sprinkle sugar on top of the shells after they've dried. If you do this step too soon the sugar will melt into the shell.
Preheat oven to 325°F
Bake one tray at time, bake at 5-6 minutes, rotate bake for another 5-6 minutes. It is super important to rotate halfway through. This allows both sides to cook evenly.
Remove from the oven, let macaron cool completely before filling it with the cranberry sauce.