In a large pot, heat a splash of olive oil then add the garlic, onion, and bell pepper (I also added 3 Shiitake mushrooms, chopped) and saute until the onion and bell pepper are softened.
Then add the beef and cook until no pink remains then drain off any fat.
Add the pasta sauce, tomato paste, chopped tomatoes, seasonings, and water. Mix together, cover and simmer for about 15 minutes, stirring occasionally. If you want a thicker goulash, simmer for a bit longer to reduce some of the liquid. If too thick, add some of the tomato juice from the canned tomatoes.
Add the macaroni and mix in, cover and simmer until the macaroni is tender, about 20 minutes or so, stirring occasionally.
Top with the shredded cheese if desired, cover and let sit for 5 minutes or until the cheese is melted.
Serve.