In preparing the meatballs, mix the ground beef, egg, ricotta cheese, Parmigiano cheese, sun-dried tomatoes, salt, and pepper in a mixing bowl. Mix them well until all the ingredients are blended evenly. After that, shape the mixture into the size of golf balls, albeit slightly larger, and pat them down.
For the tomato sauce, heat the olive oil in a large pot then saute the onions. Add the tomato puree and let it boil. When it boils, add salt and freshly ground black pepper to taste. Add the uncooked meatballs, and cook over medium heat for 30 minutes.
Meatballs with Tomato Sauce saved from https://www.mklibrary.com/foods-to-pair-with-cabernet-sauvignon-wines/ on August 26, 2019.