In a large skillet, brown the ground beef over medium-high heat. Drain off any excess grease.
Add the chopped onion and minced garlic to the skillet and cook until softened, about 5 minutes.
Stir in the diced tomatoes, tomato sauce, beef broth, Worcestershire sauce, mustard, and smoked paprika. Bring to a simmer.
Add the elbow macaroni to the skillet and stir to combine. Cover and cook according to package directions, or until the pasta is tender. Reduce the heat if necessary to prevent sticking.
Remove from heat and stir in the shredded cheddar cheese until melted and smooth.
Serve immediately and enjoy!
Notes
Optional: Garnish with chopped tomatoes, green onions, or a dollop of sour cream.