*Prep Time: 20 minutes | Cook Time: 4-6 hours on Low, 2-3 hours on High | Total Time: Up to 6 hours 20 minutes*
*Difficulty: Easy | Servings: 6-8 | Intensity Level: Low-Effort, Hands-Off Cooking*
There’s nothing quite like the comforting, layered flavors of a classic lasagna—except maybe a lasagna you can make in your slow cooker with a fraction of the effort and all of the soul-warming taste. Introducing Crockpot Lasagna Soup: a deconstructed, spoonable version of the Italian-American favorite. It’s a hearty, brothy masterpiece loaded with Italian sausage, tender pasta, rich tomatoes, and gooey, melted cheese. Perfect for busy weeknights, meal prep, or feeding a crowd, this recipe delivers maximum flavor with minimal active time. Simply layer the ingredients, let the slow cooker work its magic, and finish with a creamy, cheesy topping. Let’s get cozy.
Ingredients
For the Soup:
1 lb (450g) mild or hot Italian sausage, casings removed (or 1 lb ground beef or turkey)
1 medium yellow onion, diced
4 cloves garlic, minced
1 (24-oz) jar marinara sauce (about 3 cups)
1 (14.5-oz) can diced tomatoes, undrained
6 cups low-sodium chicken broth
2 teaspoons Italian seasoning
1 teaspoon dried basil
½ teaspoon red pepper flakes (optional, for heat)
1 bay leaf
8-10 uncooked lasagna noodles, broken into 1-2 inch pieces (about 8 oz)
1 cup fresh spinach, roughly chopped (optional)
For the Cheese Topping:
1 cup whole milk ricotta cheese
½ cup grated Parmesan cheese
1 cup shredded mozzarella cheese, divided
Salt and freshly ground black pepper, to taste
For Serving (Optional):
Fresh basil or parsley, chopped
Additional grated Parmesan
Garlic bread or crusty baguette
Equipment
6-Quart or larger slow cooker (Crockpot)
Skillet (for browning option)
Mixing bowls
Measuring cups and spoons
Step-by-Step Instructions
Step 1: Brown the Meat (Optional but Recommended)
Time: 10 minutes | Intensity: Medium
For deeper flavor, heat a skillet over medium-high heat. Add the Italian sausage and diced onion. Cook, breaking up the meat with a spoon, until the sausage is browned and the onion is softened, about 5-7 minutes. Add the minced garlic and cook for 1 more minute until fragrant. Drain any excess grease.
Shortcut: You can skip this step and add raw sausage, onion, and garlic directly to the crockpot. The soup will still be delicious, but browning first creates a richer, more complex flavor base.
Step 2: Assemble in the Slow Cooker
Time: 10 minutes | Intensity: Low
To your slow cooker, add the meat mixture (or raw meat, onion, and garlic). Pour in the marinara sauce, diced tomatoes with their juices, chicken broth, Italian seasoning, dried basil, red pepper flakes (if using), and the bay leaf. Stir until well combined.
Step 3: Slow Cook to Perfection
Time: 4-6 hours Low or 2-3 hours High | Intensity: None (Hands-Off)
Cover and cook on LOW for 4-6 hours or on HIGH for 2-3 hours. About 30-45 minutes before the end of the cooking time, stir in the broken lasagna noodles. If cooking on Low, you may want to turn the heat to High when adding the noodles to ensure they cook through. Cover and continue cooking until the pasta is tender.
Step 4: Prepare the Cheese Topping
Time: 5 minutes | Intensity: Low
While the pasta cooks, in a medium bowl, mix the ricotta, Parmesan, ½ cup of the shredded mozzarella, and a pinch of salt and pepper until smooth. Set aside.
Step 5: Final Touches and Serve
Time: 5 minutes | Intensity: Low
Once the pasta is al dente, turn off the slow cooker. Remove the bay leaf. Stir in the fresh spinach, if using, and let it wilt in the residual heat for 1-2 minutes. Taste and adjust seasoning with salt and pepper.
To Serve: Ladle the hot soup into bowls. Dollop a generous spoonful (or two!) of the ricotta cheese mixture into the center of each bowl. Sprinkle with the remaining ½ cup of shredded mozzarella. The heat from the soup will melt the cheeses beautifully.
Garnish with fresh basil or parsley and an extra sprinkle of Parmesan. Serve immediately with garlic bread for the ultimate dipping experience.
Chef’s Notes & Tips for Success
Pasta Perfection: To prevent mushy noodles, don’t add them at the beginning. Adding them in the last 30-45 minutes ensures they keep a perfect, tender bite. You can also cook the lasagna noodles separately according to package directions and add them to individual bowls when serving.
Make It Your Own: Add sliced mushrooms, diced zucchini, or bell peppers with the onions. For a creamier soup, stir in ½ cup of heavy cream during the last 30 minutes.
Storage & Reheating: Store cooled soup (without the cheese topping) and topping separately in airtight containers in the refrigerator for up to 4 days. The pasta will continue to absorb broth, so you may need to add a splash of water or broth when reheating gently on the stovetop or in the microwave. The soup can be frozen (without pasta or topping) for up to 3 months. Thaw overnight and reheat, adding freshly cooked pasta and the cheese topping.
Instant Pot Method: Use the “Sauté” function to brown the meat and onions. Add all soup ingredients except pasta and spinach. Pressure cook on High for 5 minutes. Quick release, then use Sauté mode again to simmer. Add broken noodles and cook for 6-8 minutes until tender. Stir in spinach and serve with cheese topping.
Nutrition Information (Per Serving, approximately 1.5 cups soup + cheese topping)
Servings: 8
Calories: ~480 kcal
Total Fat: 28g
Saturated Fat: 12g
Cholesterol: 75mg
Sodium: 1280mg (will be lower if using low-sodium broth and marinara)
Total Carbohydrates: 32g
Dietary Fiber: 3g
Sugars: 8g
Protein: 25g