In a mixing bowl, whisk together flour and salt. Gradually add milk while stirring to avoid lumps. Incorporate eggs and melted butter until smooth.

Allow the batter to rest for at least 30 minutes.

Heat a non-stick skillet over medium heat and lightly grease it with butter. Pour about 1/4 cup of batter into the skillet, swirling to create an even layer. Cook until golden brown on one side (around 2 minutes), then flip.

Once both sides are golden brown, fill each crepe with ham and cheese while still warm. Top with scrambled eggs before folding.

Fold the crepes in half or roll up and serve immediately.