Step 1

In a large skillet, heat the olive oil until it shimmers. Add Italian sausage, onion and garlic and cook over medium heat until sausage is cooked through. Drain off excess fat. Pour drained sausage mixture into a large crock pot.

Step 2

Add salt, pepper, oregano, basil, rosemary, sugar, 2 jars marinara sauce, red wine, and water and stir together. Cook on high for 3-4 hours or low 6-8 hours.

Step 3

Turn crockpot on high for the last hour and add spaghetti. Break noodles, as needed to fit into crockpot. Stir the noodles well into the sauce so they're coated with the sauce. Check pasta after 45 minutes to see if the spaghetti is done. Add more water as needed to loosen the sauce.