Light and Crispy Almond Flour Waffles

Name: Light and Crispy Almond Flour Waffles
Ingredients: 4 tablespoons (1/2 stick) unsalted butter, plus more for serving; 2 cups super-fine almond flour (8 ounces); 2 teaspoons baking powder; 1/2 teaspoon kosher salt; 3 large eggs; 1 1/2 cups unsweetened almond milk; 4 tablespoons granulated sugar; 1 teaspoon vanilla extract; 1 teaspoon almond extract; Cooking spray, as needed; Maple syrup, for serving; Fresh fruit, such as strawberries, blackberries, or raspberries, for serving (optional)