Brown the Beef In a skillet over medium heat, cook ground beef until no pink remains. Drain off fat and transfer beef to the slow cooker.
Add Veggies Stir in diced onion, minced garlic, grated carrot, and diced celery.
Build the Sauce In a bowl, whisk together crushed tomatoes, tomato paste, beef broth, basil, oregano, salt, and pepper. Pour over the meat and vegetables.
Slow Cook Cover and cook on Low for 6–8 hours or High for 3–4 hours.
Prepare the Pasta About 20 minutes before serving, cook spaghetti to package directions until al dente. Drain.
Serve & Garnish Spoon Bolognese sauce over pasta and top with grated Parmesan.
💡 Tips & Variations
Swap ground beef for turkey or Italian sausage.
Stir in a splash of red wine or balsamic vinegar when adding the sauce.
Add fresh basil or parsley just before serving for brightness.
Double the recipe to freeze portions for quick future meals.
