Put the confectioners sugar and almond flour into a food processor
Add the salt to the egg whites and beat to almost stiff peaks. At the very end of this process, add in the granulated sugar, cinnamon and food coloring.
Gently fold in the confectioners sugar and almond flour mixture until combined.
Let the batter sit uncovered for 15 minutes.
Fill a piping bag with the mixture and line the baking sheet with parchment.
Pipe lines that are 1 inch wide and about 6 inches long.
Allow these to sit on the counter for at least a half hour and up to an hour. Meanwhile preheat the oven to 325.
Bake about 10 minutes. Allow to cool completely before the next step.
Make the ganache byu heating up the cream and pouring it over the chocolate. Stir until smooth, warming it as needed if the chocolate doesn't all melt. Allow to cool until it is a little thicker before using.
Spread the ganache on one of the long macaroons and then use another one to form the long sandwich.