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Italian-American

Slow Cooker Lasagna

Ground beef is browned until it is cooked through, then layered with no-boil noodles, ricotta, and mozzarella. The slow cooker finishes the noodles until they are tender.

Prep
30 min
Cook
4 hr
Total
4 hr 30 min
Servings
8
Difficulty
Medium
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Square serving of slow cooker lasagna with melted mozzarella and a meat sauce layer

Why you’ll love it

  • Browning the beef first locks in a cooked-through meat sauce.
  • No-boil noodles soften in the sauce without a pasta pot.
  • The slow cooker keeps the edges from drying the way a long oven bake can.
  • It slices cleaner after a short rest.

Ingredients

Servings8

Ingredient amounts scale. Oven temperature and cook time do not. Salt, spices, and leaveners are a starting point after you scale. Taste and adjust.

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Instructions

  1. 1

    Thaw the ground beef completely in the refrigerator if it was frozen. Do not put frozen meat in the slow cooker.

  2. 2

    Heat the oil in a skillet over medium-high. Add the beef and onion and cook, breaking the meat up, until no pink remains. Check the center of the largest crumble. The beef must read 160°F and be cooked through. Stir in the garlic, salt, and pepper for 30 seconds. Drain extra fat if the pan is greasy.

  3. 3

    Stir the marinara into the beef. If you are using regular lasagna noodles instead of no-boil noodles, soak them in hot water for 20 minutes until they are pliable, then drain.

  4. 4

    Mix the ricotta, egg, Parmesan, and Italian seasoning in a bowl.

  5. 5

    Spread 1 cup of the meat sauce in the slow cooker. Add a layer of noodles, breaking pieces to fit without a huge overlap. Dollop on a third of the ricotta mixture, a handful of mozzarella, and more sauce. Repeat the layers, ending with sauce and the remaining mozzarella.

  6. 6

    Cover and cook on low for 4 hours. The lasagna is done when the noodles are tender in the center, the cheese is melted, and the meat sauce is still cooked through. Rest 15 minutes with the lid off before scooping.

Pro tips

  • Break noodles so they do not stack three thick in one spot. Thick stacks stay hard.
  • Do not lift the lid in the first 3 hours. Each peek drops the temperature.
  • A 6-quart oval cooker fits the layers best. A small round cooker needs more broken noodles.

Easy substitutions

Ground beef
Ground turkey. Cook it to 160°F and cooked through the same way.
Ricotta
Small-curd cottage cheese, drained.
No-boil noodles
Regular lasagna noodles soaked in hot water for 20 minutes.

Storage and reheating

Storage

Refrigerate leftovers in a covered container for up to 4 days, or freeze slices for up to 2 months.

Reheating

Warm covered in a 350°F oven until the center is hot, about 20 minutes, or microwave a slice until it is steaming.

Nutrition

Estimates per serving, using standard ingredient averages and rounded to the nearest gram. This is not a lab analysis, and it shifts if you change brands or add sides.

Calories
410
Protein
28 g
Carbs
34 g
Fat
18 g
Fiber
3 g

Moderate · Slow Cooker, Stovetop

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From the kitchen

Kitchen tools we love

Practical tools these recipes actually use. This is not a review roundup, and these are not paid placements. If affiliate links are added later, they will be labeled and disclosed.

  • A heavy 12-inch skillet

    Most of the chicken and steak recipes are written for one pan that holds heat. Stainless or cast iron both work.

  • An air fryer with a real basket

    The air-fryer recipes expect a single layer. A crowded basket steams instead of browning.

  • A half-sheet pan

    Drumsticks, potatoes, sausage, and carrots all use one. A dark pan browns faster than a very shiny one.

  • A sharp chef’s knife

    These recipes do not need a specialty blade. A sharp 8-inch knife is faster and safer than a dull one.

  • A large cutting board

    Big enough that the onion and the raw chicken are not sharing the same puddle.

  • Dry cups and a liquid cup

    Desserts in particular expect level dry measures and a separate cup for milk.

  • An instant-read thermometer

    Use it for poultry, pork chops, and meatloaf. Color is a weak guide.

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Ingredients