Preheat waffle cone maker on medium.
Whisk together flour, salt and cinnamon until thoroughly combined.
Add in butter, milk, vanilla and ¾ cup sugar, whisking thoroughly.
With an electric mixer on high speed, beat egg whites until foamy.
Add remaining 1 tablespoon sugar and beat until well mixed.
Gently stir in egg whites to flour mixture.
Coat waffle maker with cooking spray.
Spoon ¼ cup batter onto the waffle maker. Using a small spatula, spread batter slightly.
Close lid and cook 1 ½ minutes or until desired color is reached.
Remove waffle from maker, place onto a clean cloth.
Lift and roll the waffle around the cone form. Gently hold for 5 seconds to set.
Place cones on a wire rack or in a cone holder to cool.
For the Chocolate Double-Dip:
Place chocolate in a microwaveable bowl wide enough to fit the cones’ widest end. Microwave on high for 30 seconds.
Stir, and repeat microwaving until chocolate is thoroughly melted.
Dip the wide end of each cone into chocolate, set aside.
PRO TIP: For extra fun, dip chocolate-covered cones into a bowl of candy sprinkles.