Preheat oven to 200°F. Line baking sheets with parchment paper. Using a 3-inch round mold, mark the interior ring with a pencil. Continue to make 12 per baking sheet. Flip the parchment paper over so pencil markings are underneath.
Place egg whites in the bowl of a stand mixer fitted with the whisk attachment or use hand mixer and place in a large bowl. Beat until light and foamy on low speed. Turn off the mixer and add the orange extract. Carefully, add the powdered sugar and beat on medium speed for 20 minutes. The meringue will get thick.
Spoon some of the meringue into a decorating bag fitted with a star tip. Then alternately add some colored food gel and then meringue on top of that. Repeat until 2/3 of bag is full.
Pipe the meringues starting in center of one circle and swirl outward in a circular motion until lined template mark. Repeat until all meringue is used. This made 20.
Bake for 2 hours. Turn oven off and allow meringues to sit in oven until completely cooled. Remove from oven when cool.
Spread 1 tablespoon of Nutella on the flat bottom of one meringue cookie and twist and with the flat bottom of another press to make a sandwich. Refrigerate until ready to serve in an airtight container.
<p>This recipe for French Meringue Chocolate Sandwich Cookies was created by and is the propery of Kevin O'Leary, owner of Kevin is Cooking LLC. https://keviniscooking.com/french-meringue-chocolate-sandwich-cookies/ </p>