1In a large mixing bowl, whisk together the flour, eggs, milk, 1 tablespoon of sugar, and a pinch of salt until smooth to create the crepe batter.
Heat a non-stick skillet over medium heat and lightly coat with some of the melted butter.
Pour a small amount of the crepe batter into the skillet, tilting the pan to spread the batter thinly across the bottom.
Cook the crepe for about 1 minute or until the bottom is light brown, then flip and cook the other side for another minute. Repeat with the remaining batter, adding butter to the skillet as needed.
In another skillet, combine the sliced apples, ground cinnamon, brown sugar, and cayenne pepper. Cook over medium heat until the apples are soft and caramelized, about 5-7 minutes.
Fill each crepe with the cinnamon apple mixture, fold, and serve warm.