Soufflé Pancakes with Butter Pecan Syrup

Name: Soufflé Pancakes with Butter Pecan Syrup
Ingredients: 1 cup pure maple syrup; 4 tablespoons salted butter; 1/2 cup toasted pecans, chopped; 1/2 teaspoon maple extract; 1 cup all-purpose flour; 1 1/2 teaspoons baking powder; 1/4 teaspoon kosher salt (see Cook's Note); 2/3 cup whole milk; 3 tablespoons unsalted butter, melted; 3 tablespoons powdered sugar, plus more for serving; 1 teaspoon pure vanilla extract; 1/2 teaspoon almond extract; 2 large egg yolks plus 4 large egg whites; 1/2 teaspoon cream of tartar; Nonstick cooking spray, for the ring molds