This is another family recipe that doesn't really have measurements etc. To make fried stuffed peppers you basically take enough of the meatball recipe to fill as many cubanelle peppers you want to make. Grandma recommends that you try to buy the very straightest peppers you can find. I used 1.5 cups (approx.) for 2 peppers. Once the peppers are stuffed with the meatball mixture you heat a little oil in a pan and fry the peppers, turning them onto each side until the filling is cooked. Then the peppers are topped with tomato sauce and a little Parmesan cheese.
This was very easy and pretty fast. For a healthier version, I don't see why you can't bake them.
Here is a picture of the peppers right out of the pan. I basically divided the recipe by a third to make the filling. Any leftover filling can be made into meatballs so it isn't like you are wasting it by making a little too much.