Cookies and Cream Macarons

Name: Cookies and Cream Macarons
Yield: 30
Ingredients: 3 Egg whites, large; 2/3 cup Almond flour; 2 tsp Chocolate extract; 8 Cookies worth of frosting; 2 1/4 cups Powdered sugar; 1 pinch Salt; 2 tsp Vanilla extract, pure; 1/4 cup White sugar, granulated; 8 Oreo; 4 tbsp Butter, unsalted; 1 tbsp Whole milk