Spicy Ziti with Sausage

tablespoons oil 1/2 pound ground beef sirloin or chuck Salt and pepper 1/2 pound hot Italian sausage or fresh Mexican chorizo, casings removed 3 tablespoons fresh rosemary leaves, chopped 1 large onion, chopped 2 bell peppers (red or green), chopped 4 cloves garlic, chopped 2 cans tomatoes 1 1/2 cup beef broth or chicken broth 1 pound regular or whole grain short pasta 1 cup grated Parmesan cheese

In a large Dutch oven, heat the oil, two turns of the pan, over medium-high heat. Add the beef and season with salt and pepper. Add the sausage and cook, breaking it into crumbles as it browns. Transfer to a plate. Cook the onion, peppers and garlic with salt and pepper until softened, 8-10 minutes. Add the rosemary and garlic and stir a couple of minutes. Deglaze the pan with the broth. Add the tomatoes and simmer for 15 minutes. Bring a large pot of water to a boil. Salt the water and cook the pasta to al dente. Ladle out about a cup of the starchy cooking water and add it to the sauce. Drain the pasta and return it2 to the pot. Add the sauce, tossing with tongs for 1-2 minutes for the flavors to absorb. Serve with cheese.