Start by bringing a large pot of salted water to a boil.

Add the penne pasta to the boiling water and cook according to package instructions until al dente, about 10-12 minutes.

While the pasta cooks, heat the olive oil in a large skillet over medium heat.

Add the diced onion to the skillet and sauté for about 5 minutes until soft and translucent.

Stir in the minced garlic and cook for 1 minute until fragrant.

Add the ground beef or Italian sausage, breaking it up as it browns.

Once the meat is browned, stir in the crushed tomatoes and tomato paste.

Add the dried oregano, basil, salt, and pepper to taste, and let the sauce simmer for about 15 minutes.

Drain the cooked penne and add it directly to the sauce, tossing well to coat.