Bring a large pot of salted water to a boil. Add short pasta and cook according to package instructions until al dente, about 8-10 minutes.

In a large skillet over medium heat, add oil and heat. Add ground beef, breaking apart, and cook until fully browned, about 5-7 minutes. Drain excess grease.

Stir in diced bell peppers and sauté for 5-7 minutes until softened.

Pour in tomato sauce, stir and simmer on low heat for about 5 minutes.

Add drained pasta to the skillet and toss until well-coated. Add reserved pasta water if needed.

Sprinkle shredded cheese on top, stir until melted, or broil for 2-3 minutes for a crispy finish.

Serve hot, garnished with extra cheese if desired.