Ingredients You’ll Need

Serves 6–8

• 1 lb ground beef (or Italian sausage for extra flavor)
• 1 medium onion , diced
• 3 cloves garlic , minced
• 1 jar (24 oz) marinara sauce (or homemade if you have it!)
• 1 can (15 oz) diced tomatoes
• 1 can (6 oz) tomato paste
• 1 tsp dried oregano
• 1 tsp dried basil
• 1/2 tsp red pepper flakes (optional, for heat)
• 4 cups cooked spaghetti (about 8 oz uncooked)
• 2 cups shredded mozzarella cheese , divided
• 1/2 cup grated Parmesan cheese , plus extra for topping
• Optional Garnish : Fresh parsley, crushed red pepper, or extra Parmesan

---

Step-by-Step Instructions

Step 1: Brown the Meat

1. In a skillet over medium heat, cook the ground beef (or sausage) until browned. Drain excess fat.
2. Add the diced onion and garlic to the skillet and sauté for 2–3 minutes until softened.

Step 2: Combine Ingredients in Slow Cooker

1. Transfer the cooked meat mixture to the slow cooker.
2. Stir in the marinara sauce, diced tomatoes, tomato paste, oregano, basil, and red pepper flakes (if using). Mix well to combine.

Step 3: Cook

1. Cover and cook on low for 4–6 hours or on high for 2–3 hours , until the sauce is bubbly and flavorful.

Step 4: Add the Spaghetti and Cheese

1. About 30 minutes before serving, stir in the cooked spaghetti and 1 1/2 cups of shredded mozzarella cheese.
2. Sprinkle the remaining 1/2 cup of mozzarella cheese and 1/4 cup of Parmesan cheese over the top. Cover and cook for an additional 15–20 minutes, or until the cheese is melted and bubbly.

Step 5: Serve

1. Let the casserole cool slightly before serving. Garnish with fresh parsley, crushed red pepper, or extra Parmesan cheese if desired.