Crockpot Lasagna Soup – Easy Slow Cooker Comfort

Crockpot lasagna soup exists because lasagna is a commitment and Tuesday is not. The failure mode here is mushy noodles and a broth that tastes like watery tomato sauce, which happens when pasta goes in at the start and cooks for six hours. The fix is simple: cook the noodles separately, or drop them in during the last twenty minutes, and finish the pot with a splash of cream and a dollop of ricotta so the broth turns silky instead of thin.

You brown the beef and sausage first, because browning is flavor and gray meat is not. Everything else goes into the slow cooker and is left alone, which is the entire point. A 6-quart (5.7 L) slow cooker is the cheapest adequate tool here; anything smaller will overflow once the broth and pasta join the party.

If the broth tastes flat at the end, it usually needs acid rather than salt. A teaspoon of red wine vinegar will wake it up faster than another pinch of anything.

About the Ingredients

1 lb (450g) ground beef, 85 percent lean

Leaner beef keeps the broth from turning greasy. Ground turkey works as a substitute, though add an extra tablespoon of olive oil when browning it.

8 oz (225g) Italian sausage, casings removed

Hot or sweet both work; hot adds a background heat that survives the long cook. Bulk sausage from the meat counter is cheaper than links you have to strip.

1 medium yellow onion, diced (about 1 cup)

Yellow onion melts into the broth; red onion stays too firm and turns the color odd. Frozen diced onion is a legitimate shortcut here.

3 cloves garlic, minced

Fresh garlic, not powder, since it goes in late enough to keep its edge. Jarred minced garlic is acceptable if you use a heaping tablespoon.

24 oz (680g) jar marinara sauce

Any good jarred marinara works; avoid ones with added sugar, since the tomatoes already carry sweetness. Crushed tomatoes plus a teaspoon of dried oregano is a fine substitute.

4 cups (950ml) low-sodium beef broth

Low-sodium matters because the broth reduces and concentrates. Chicken broth substitutes cleanly if that is what is in the pantry.

14.5 oz (410g) can diced tomatoes, undrained

Fire-roasted diced tomatoes add a subtle smokiness that reads as long-simmered. Do not drain them; the liquid is part of the broth.

8 oz (225g) lasagna noodles, broken into 1-inch pieces

Regular noodles, not no-boil, which turn chalky in a slow cooker. Break them in a towel with your hands to avoid shards across the counter.

1 cup (250g) whole-milk ricotta

Whole milk ricotta gives body; part-skim is grainier but works. Cottage cheese blended smooth is the classic swap.

1 cup (115g) shredded mozzarella

Low-moisture mozzarella melts without pooling water. Fresh mozzarella will make the soup stringy and watery, so save it for something else.

1/2 cup (50g) grated Parmesan

Buy a wedge and grate it; the pre-shredded tub is coated in starch and clumps. Pecorino is sharper and needs only half as much.

1/2 cup (120ml) heavy cream

Stirred in at the end for silkiness. Half-and-half works but can separate if the pot is very hot, so temper it with a ladle of broth first.

Tips & Tricks

• Cook the pasta separately if you plan on leftovers. Noodles left in the broth keep drinking liquid and turn to paste by the next day; boil them al dente and add to individual bowls instead.
• Brown the meat in a skillet first, not in the slow cooker insert. A slow cooker never gets hot enough to develop a crust, and that browned layer is most of the flavor.
• Undercook the noodles by two minutes relative to the package. They finish in the hot broth and hold their texture instead of dissolving.
• Season at the end, not the beginning. The broth reduces over hours, so salt added early becomes aggressive by the time you ladle it out.

Step-by-Step Instructions

1. Brown the meat

Heat a 12-inch (30cm) skillet over medium-high heat, about 375F (190C), and cook the beef and sausage for 6 to 8 minutes until no pink remains and the edges are browned. Break it up as it cooks; you want crumbles, not a brick.

2. Soften the onion

Add the onion to the same skillet and cook 4 to 5 minutes at medium heat, 350F (175C), until translucent and slightly golden at the edges. Add the garlic and stir for 30 seconds, just until fragrant, then pull off the heat.

3. Load the slow cooker

Scrape the meat mixture into a 6-quart (5.7 L) slow cooker. Add the marinara, beef broth, and diced tomatoes with their liquid, and stir once to combine.

4. Cook low and slow

Cover and cook on low for 5 to 6 hours or on high for 3 hours, until the broth is bubbling gently at the edges and the meat is tender. Do not lift the lid during the first two hours.

5. Add the noodles

Stir in the broken lasagna noodles, cover, and cook on high for 20 to 25 minutes, until the pasta is al dente and offers a slight resistance when bitten. Taste one before you commit.

6. Finish with dairy

Turn the cooker off. Stir in the heavy cream, then dollop in the ricotta and stir just until streaky, not uniform. Add the mozzarella and Parmesan and cover for 3 minutes until the cheese slumps and melts.

7. Season and serve

Taste and adjust with salt, black pepper, and a teaspoon of red wine vinegar if the broth tastes flat. Ladle into bowls and top with extra Parmesan.

Delicious Variations

Spicy Version

Use hot Italian sausage and add a pinch of red pepper flakes with the garlic.

Vegetarian

Swap the meats for 12 oz (340g) of chopped mushrooms and a can of lentils, browning the mushrooms hard first.

White Lasagna Soup

Replace the marinara with 2 cups of whole milk and skip the diced tomatoes for a creamy, alfredo-style broth.

How to Store Crockpot Lasagna Soup

Frequently Asked Questions

If you make this, brown the meat properly and do not rush the noodles at the end; those two things separate a good pot from a great one. Measure twice. You know the rest.

Crockpot Lasagna Soup

Crockpot lasagna soup delivers all the meaty, cheesy layers of lasagna in a rich tomato broth you set and forget, ready in one pot.

★★★★½ 4.8 (213 ratings)

15 minPrep time35 minCook time6Servings285 kcalCalories

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🧂 Ingredients

• 1 lb (450g) ground beef, 85 percent lean
• 8 oz (225g) Italian sausage, casings removed
• 1 medium yellow onion, diced (about 1 cup)
• 3 cloves garlic, minced
• 24 oz (680g) jar marinara sauce
• 4 cups (950ml) low-sodium beef broth
• 14.5 oz (410g) can diced tomatoes, undrained
• 8 oz (225g) lasagna noodles, broken into 1-inch pieces
• 1 cup (250g) whole-milk ricotta
• 1 cup (115g) shredded mozzarella
• 1/2 cup (50g) grated Parmesan
• 1/2 cup (120ml) heavy cream

📋 Instructions

1. 1Brown the meat — Heat a 12-inch (30cm) skillet over medium-high heat, about 375F (190C), and cook the beef and sausage for 6 to 8 minutes until no pink remains and the edges are browned. Break it up as it cooks; you want crumbles, not a brick.
2. 2Soften the onion — Add the onion to the same skillet and cook 4 to 5 minutes at medium heat, 350F (175C), until translucent and slightly golden at the edges. Add the garlic and stir for 30 seconds, just until fragrant, then pull off the heat.
3. 3Load the slow cooker — Scrape the meat mixture into a 6-quart (5.7 L) slow cooker. Add the marinara, beef broth, and diced tomatoes with their liquid, and stir once to combine.
4. 4Cook low and slow — Cover and cook on low for 5 to 6 hours or on high for 3 hours, until the broth is bubbling gently at the edges and the meat is tender. Do not lift the lid during the first two hours.
5. 5Add the noodles — Stir in the broken lasagna noodles, cover, and cook on high for 20 to 25 minutes, until the pasta is al dente and offers a slight resistance when bitten. Taste one before you commit.
6. 6Finish with dairy — Turn the cooker off. Stir in the heavy cream, then dollop in the ricotta and stir just until streaky, not uniform. Add the mozzarella and Parmesan and cover for 3 minutes until the cheese slumps and melts.
7. 7Season and serve — Taste and adjust with salt, black pepper, and a teaspoon of red wine vinegar if the broth tastes flat. Ladle into bowls and top with extra Parmesan.

👨‍🍳 Chef's Note: The soup thickens considerably as it sits, so keep a cup of broth on hand to loosen leftovers. A parmesan rind in the pot is the cheapest flavor upgrade available.

Servings: 6

Cuisine: Italian-American

Course: Soup

Nutrition (per serving): 285 kcal · 12g protein · 22g carbs · 9g fat

Written by Tomas Brandt

Covers home repair and workshop craft with a focus on doing more with fewer tools. He writes from the bench, walking through the order of operations and the mistakes that cost time. His pieces assume the reader is capable but new to the task.