Lasagna soup crockpot is a layered Italian-American classic converted into a slow-cooker meal: a savory tomato and beef broth with broken lasagna noodles, finished with a ricotta-Parmesan dollop at the table. The concrete benefit is that you get the full lasagna flavor profile with roughly fifteen minutes of hands-on work and no oven monitoring.
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Before you start, run this diagnostic checklist: 1) slow cooker insert is at least 6 quarts; 2) ground beef is fully thawed and drained; 3) noodles will be added in the last 30 minutes, not at the start; 4) ricotta mixture is mixed and chilled separately; 5) a wooden spoon and a ladle are within reach; 6) you have a thermometer to confirm the beef reaches 160 F (71 C). Skip any item and the texture or safety margin suffers.
Safety first: raw ground beef must reach an internal temperature of 160 F (71 C) before it enters the slow cooker, and the finished soup should hold at 165 F (74 C) or above during serving. Keep the lid on during cooking; every lid lift drops the internal temperature and adds cooking time.
Why You'll Love This Recipe
About the Ingredients
1 lb (450 g) lean ground beef (90/10)
Lean beef keeps the broth from turning greasy; ground turkey or Italian sausage are workable swaps. If using sausage, buy loose bulk rather than links so you can brown it evenly.
1 medium yellow onion, diced (about 1 cup / 160 g)
Yellow onion gives the sweetest base after long cooking; white onion is sharper, and frozen diced onion works in a pinch with no extra liquid needed.
3 cloves garlic, minced (about 1 tbsp)
Fresh garlic is preferred; jarred minced garlic is acceptable but use 1 1/2 teaspoons since it is milder. Add it late in browning so it does not scorch.
1 can (28 oz / 794 g) crushed tomatoes
Crushed tomatoes give body without chunks; diced tomatoes make a looser soup, and passata can substitute if you reduce the broth by 1/2 cup.
4 cups (950 ml) low-sodium beef broth
Low-sodium lets you control the final salt; chicken broth is a neutral swap, and water plus 2 teaspoons beef bouillon works if you are out.
1 can (15 oz / 425 g) tomato sauce
Tomato sauce smooths the acidity; use an extra 1/2 cup of crushed tomatoes if you prefer a thicker, more rustic base.
1 tsp dried oregano, 1 tsp dried basil, 1/2 tsp fennel seed, 1/2 tsp black pepper
Fennel seed is what makes it read as Italian sausage flavor; crush it lightly. If you lack fennel, use 1/2 teaspoon anise seed, not more.
8 oz (225 g) lasagna noodles, broken into 2-inch pieces
Standard curly-edge noodles hold up best; no-boil noodles turn mushy in a slow cooker, and gluten-free noodles should be added only in the final 20 minutes.
1 cup (250 g) whole-milk ricotta
Whole-milk ricotta gives the richest dollop; cottage cheese drained for 10 minutes is a lighter substitute with similar texture.
1/2 cup (50 g) grated Parmesan, plus more for serving
Buy a wedge and grate it yourself; pre-shredded Parmesan contains anti-caking starch that clumps in hot broth.
1 1/2 cups (170 g) shredded low-moisture mozzarella
Low-moisture mozzarella melts cleanly; fresh mozzarella releases water and thins the soup, so drain and pat it dry if you use it.
2 tbsp chopped fresh basil or parsley, for serving
Flat-leaf parsley is the more reliable year-round option; dried basil loses its brightness, so add 1 teaspoon at the end instead.
Tips & Tricks
Do not add the noodles at the start
they absorb broth for hours and turn to paste. Add them in the last 30 minutes on High, or cook them separately and ladle soup over them.
Brown the beef before it goes in
raw crumbled beef leaves a gray, greasy broth. Sear it in a skillet over medium-high heat (about 400 F / 204 C pan surface) for 6 to 8 minutes until no pink remains and it reads 160 F (71 C) internally.
Season at the end, not the beginning
tomatoes and broth concentrate as they reduce, so salt added early overpowers the finished pot. Taste and adjust after the noodles are in.
Keep the insert full enough
a 6-quart cooker needs at least two-thirds full to heat evenly. If your cooker is larger, the soup will cook slower than the times given.
Pro Tips
Step-by-Step Instructions
1. Brown the beef safely
Heat a 12-inch skillet over medium-high heat, about 400 F (204 C) surface temperature, and cook the beef and onion for 6 to 8 minutes until no pink remains and the beef reads 160 F (71 C) on an instant-read thermometer. Drain the fat and stir in the garlic for 30 seconds, just until fragrant and not browned.
2. Load the slow cooker
Transfer the beef mixture to a 6-quart slow cooker and add the crushed tomatoes, tomato sauce, beef broth, oregano, basil, fennel seed, and pepper. Stir once so nothing sits dry above the liquid line.
3. Cook on low
Cover and cook on Low for 5 hours or on High for 3 hours. Do not lift the lid except for one stir at the halfway point; the broth should look slightly reduced and smell sweetly tomato-forward, not sharp.
4. Add the noodles
Stir in the broken lasagna noodles, cover, and cook on High for 25 to 30 minutes, until the noodles are tender with a slight bite and the edges of the liquid bubble steadily. If the soup looks thick, add reserved broth 1/4 cup at a time.
5. Mix the cheese dollop
While the noodles cook, stir together the ricotta and Parmesan in a small bowl and refrigerate. Keep it cold until serving so it holds its shape in the hot soup.
6. Season and taste
Taste the soup and add salt in 1/4 teaspoon increments, plus more pepper if needed. The broth should taste balanced, not salty, since the cheese dollop adds salt at the table.
7. Serve hot
Ladle into warmed bowls, top each with a generous spoonful of the ricotta mixture and a scattering of mozzarella, then finish with basil or parsley. Serve immediately while the broth is above 165 F (74 C).
Delicious Variations
Spicy sausage version
swap the ground beef for hot Italian sausage and add 1/2 teaspoon red pepper flakes with the garlic.
Vegetarian version
replace the beef with 2 cups of chopped mushrooms and 1 cup of cooked lentils, and use vegetable broth.
Creamy tomato version
stir 1/2 cup of heavy cream into the pot after the noodles are tender, off the heat, for a rosier broth.
How to Store Lasagna Soup Crockpot
Refrigerator
Store in an airtight container for up to 4 days; the noodles will soften further, so reheat gently and thin with broth.
Freezer
Freeze the soup base without the ricotta dollop for up to 3 months in portioned containers, leaving 1 inch of headspace.
Reheating
Reheat on the stovetop over medium-low heat to 165 F (74 C), stirring occasionally and adding broth as needed; microwave in 1-minute bursts, stirring between.
Frequently Asked Questions
Q: Can I put raw ground beef in the crockpot for lasagna soup?
Yes, but browning it first is strongly recommended for flavor and texture. Raw crumbled beef releases fat and gray liquid that leaves the broth greasy; if you skip browning, use lean beef and skim the surface at the halfway stir.
Q: Why did my lasagna noodles turn mushy in the slow cooker?
They were added too early or cooked too long. Add broken noodles only in the final 25 to 30 minutes on High, or boil them separately and ladle the soup over them at serving.
Q: Can I use no-boil lasagna noodles in this soup?
No-boil noodles are not a good fit because they are designed to absorb moisture slowly in an oven and break down in a long simmer. Use standard curly-edge noodles, or add no-boil noodles in the last 15 minutes and accept a softer texture.
Q: How do I make crockpot lasagna soup vegetarian?
Replace the beef with mushrooms and lentils and use vegetable broth. Brown the mushrooms well first so they contribute the savory depth the beef would have provided.
Q: Can I double this recipe in a 6-quart slow cooker?
No, a double batch will overflow a 6-quart cooker and heat too slowly to be safe. Use an 8-quart cooker for a double batch and add 45 to 60 minutes to the Low cooking time.
If you make this, note your cooker size and the exact noodle timing you used, because those two variables decide the result more than anything else. When in doubt about doneness or safe holding temperatures, consult your local food safety authority or a qualified professional rather than guessing. Measure twice, then measure again.
Lasagna Soup Crockpot
This crockpot lasagna soup delivers all the meaty, cheesy layers of lasagna in a rich tomato broth you set and forget for six hours.
🧂 Ingredients
- 1 lb (450 g) lean ground beef (90/10)
- 1 medium yellow onion, diced (about 1 cup / 160 g)
- 3 cloves garlic, minced (about 1 tbsp)
- 1 can (28 oz / 794 g) crushed tomatoes
- 4 cups (950 ml) low-sodium beef broth
- 1 can (15 oz / 425 g) tomato sauce
- 1 tsp dried oregano, 1 tsp dried basil, 1/2 tsp fennel seed, 1/2 tsp black pepper
- 8 oz (225 g) lasagna noodles, broken into 2-inch pieces
- 1 cup (250 g) whole-milk ricotta
- 1/2 cup (50 g) grated Parmesan, plus more for serving
- 1 1/2 cups (170 g) shredded low-moisture mozzarella
- 2 tbsp chopped fresh basil or parsley, for serving
📋 Instructions
- 1Brown the beef safely — Heat a 12-inch skillet over medium-high heat, about 400 F (204 C) surface temperature, and cook the beef and onion for 6 to 8 minutes until no pink remains and the beef reads 160 F (71 C) on an instant-read thermometer. Drain the fat and stir in the garlic for 30 seconds, just until fragrant and not browned.
- 2Load the slow cooker — Transfer the beef mixture to a 6-quart slow cooker and add the crushed tomatoes, tomato sauce, beef broth, oregano, basil, fennel seed, and pepper. Stir once so nothing sits dry above the liquid line.
- 3Cook on low — Cover and cook on Low for 5 hours or on High for 3 hours. Do not lift the lid except for one stir at the halfway point; the broth should look slightly reduced and smell sweetly tomato-forward, not sharp.
- 4Add the noodles — Stir in the broken lasagna noodles, cover, and cook on High for 25 to 30 minutes, until the noodles are tender with a slight bite and the edges of the liquid bubble steadily. If the soup looks thick, add reserved broth 1/4 cup at a time.
- 5Mix the cheese dollop — While the noodles cook, stir together the ricotta and Parmesan in a small bowl and refrigerate. Keep it cold until serving so it holds its shape in the hot soup.
- 6Season and taste — Taste the soup and add salt in 1/4 teaspoon increments, plus more pepper if needed. The broth should taste balanced, not salty, since the cheese dollop adds salt at the table.
- 7Serve hot — Ladle into warmed bowls, top each with a generous spoonful of the ricotta mixture and a scattering of mozzarella, then finish with basil or parsley. Serve immediately while the broth is above 165 F (74 C).
