In a large bowl, mix together tomatoes, tomato spread paste, and spaghetti sauce. Toss in the meatballs, and stir to coat with the sauce. Sprinkle with fresh mozzarella and Parmesan. Bake in preheated oven 20-30 minutes, or until cheese is melted and sauce is bubbly.
Garnish with fresh oregano if desired.
Serve over pasta or in a sandwich or you could just eat them with a spoon.
Find the recipe for Balsamic Roasted Tomatoes with Onions here: https://lifecurrentsblog.com/balsamic-roasted-tomatoes-onions/