Preheat the oven to 400℉.
Prep your ingredients for the filling by dicing the ham and mozzarella very small. You can also grade the Parmigiano so that you have everything ready when it’s time to mix.
To make the filling, place the ricotta into a large bowl along with the ham, mozzarella, grated parmigiano, and salt and pepper to taste. Taste the filling before you add the egg to make sure that the salt is exactly how you like it.
Then add the beaten egg and mix well.
To a 9 x 12 baking pan, add a little bit of tomato sauce and drizzle of the béchamel sauce.
Take a crespelle and add about two heaping tablespoons of filling to the center, roll it up and place it seam side down into the baking dish. Continue until you run out of crespelle or filling! Hopefully you will have the perfect amount, but you know how it goes with these things!
Top with tomato sauce and béchamel. Grate parmigiana on top as well and cover with aluminum foil. Bake at 400℉ for 45 mins, uncover and place under the broiler for a few minutes to brown.