01 -
In a skillet over medium heat, cook the ground beef with diced onion and garlic until browned. Drain any excess fat.
02 -
Add the cooked meat mixture to your slow cooker. Stir in pasta sauce, diced tomatoes (if using), Italian seasoning, sugar, salt, and pepper.
03 -
Cover and cook on LOW for 4–5 hours or HIGH for 2–3 hours.
04 -
About 30–40 minutes before serving, stir in broken spaghetti noodles and water (or broth). Press the noodles down to ensure they're covered with sauce.
05 -
Cover and continue cooking on HIGH for 30–40 minutes, stirring once halfway through, until noodles are tender.
06 -
If desired, sprinkle mozzarella cheese on top during the last 10 minutes of cooking and let it melt.
07 -
Serve hot, garnished with grated Parmesan and fresh herbs.