Best Ever Spaghetti Sauce

Cook the ground beef in an extra-large skillet or saucepan over medium-high heat until no longer pink. Transfer beef to a bowl and drain excess grease from skillet (don’t clean skillet). Heat the olive oil over medium heat in the same skillet and add garlic, onions, green peppers, mushrooms and parsley. Cook, stirring occasionally, until the vegetables are soft and fragrant, about 5 minutes.
Add the tomatoes, tomato paste, beef broth, red wine, brown sugar, Italian seasoning and salt to the skillet. Bring to a boil over medium-high heat. Reduce heat to medium-low and simmer for a minimum of 1 hour, stirring occasionally. Pour over cooked spaghetti noodles and top with shaved Parmesan cheese.