Making the meatballs: Combine all the ingredients for the meatballs and knead with your hands until it is well-mixed.Put two tablespoons of this mixture in the palm of your hand and roll into balls. Repeat until all the mixture is used.
Brown meatballs: Heat the oil in a large skillet over medium-high heat. Cook the meatballs, turning carefully as they cook until they are lightly browned. Remove the meatballs from the skillet. They will finish cooking later on.
Cooking the vegetables: Remove half the oil from the skillet, and lower heat to medium-low.Add the onions and cook and stir until the onions become translucent.Stir in garlic, bell pepper, and capers. Stir until heated through and stir in tomatoes. Pour in the tomato sauce. Add 1 cup of water, and let it come to a boil.
Cooking the meatballs: Once it breaks the boil, carefully place the meatballs into the sauce. Simmer covered until they are cooked throughout (about 10 mins), turning them regularly. Season with salt to taste, and add the parsley. Remove from the heat and serve.