Meatball Subs

This is a real hit whenever I dish it up. They're quick and easy too.

2 lbs meatballs ( I get mine at Costco)
1 jar marinara
1 green pepper (sliced)
1 large onion (sliced)
1 container mushrooms 8 oz (sliced)
2 Tbsp Butter
Provolone/Mozzarella cheese slices or shreds
Hero Rolls

In a skillet melt butter and saute peppers, onions & mushrooms until tender and caramelized, remove from skillet. Warm meatballs on medium high heat for 3-5 minutes then add the marinara and reduce heat, bring to a simmer. Open & toast hero rolls then lightly butter. On a baking sheet add meatball mixture to hero roll and top with veggies & sliced cheese. Broil for 1-2 minutes in oven until melted. Enjoy. You can omit the veggies for those with a more picky palate.