Here is nice easy recipe and one of my all time favorites. I make a slightly "lighter" version for myself by using egg beaters, light miracle whip, low fat swiss cheese, and cooking spray for frying. But I've included the original recipe here. Enjoy.
8 slices french bread
8 slices ham
4 slices swiss cheese
grainy dijon mustard
1/4 cup flour
1/4 cup milk
1/2 tsp baking powder
1/2 tsp salt
2 tbsp oil for frying
1. Make sandwiches. Spread dijon on one side of bread, and mayo on the other. Include two slices of ham and 1 slice of swiss per sandwich.
2. Mix flour, eggs, milk, baking powder and salt in a shallow dish.
3. Dip sandwiches in batter, and let sit for 10 minutes to allow bread to absorb some batter.
4. Fry sandwiches in oil over medium heat 3-5 minutes per side until golden brown.