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Easy Slow Cooker Lasagna with lots of sausage. You won't believe how good it is!
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4 from 2 votes

Slow Cooker Lasagna

Williams Sonoma Slow Cooker Lasagna is the easiest and best tasting lasagna you will ever make. Tons of cheese and sausage provide plenty of flavor.
Course Main Dish
Cuisine Italian
Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes
Servings 10
Calories 800kcal
Author Christin Mahrlig


  • 1/2 Tablespoon olive oil
  • 2 lbs Italian Sausage, casings removed
  • 2 24-ounce jars spaghetti sauce
  • 2 cups water
  • 1 15- ounce container whole-milk ricotta cheese
  • 2 tablespoons chopped parsley
  • salt and ground pepper to taste
  • 16 lasagna noodles, NOT no-boil
  • 1 1/2 lbs shredded mozzarella, or however much you have in the bottom of your cheese drawer
  • 1/2 cup shredded or grated Parmesan Cheese


  • In a large skillet, heat olive oil over medium heat. Cook sausage, breaking into pieces, until browned (10-12 minutes).
  • Add spaghetti sauce and water, bring to simmer and turn heat off.
  • In smallish bowl, stir together ricotta, parsley, and salt and pepper.
  • Spread a layer of sauce in bottom of slow cooker insert. Cover with a layer of noodles (about 4) breaking them to fit and overlapping somewhat. Spread 1/3 of ricotta mixture on top. (Don’t worry too much about spreading the ricotta now, it will spread better when you add sauce). Spread 2 cups of sauce on top of ricotta. Sprinkle with about 1 cup mozzarella and 1/3 of Parmesan. Repeat layers 3 more times starting with noodles and finishing with a nice amount of mozzarella.
  • Cook on low in slow cooker for 4 hours.
  • Place slow cooker insert in oven and broil until cheese is bubbly and starting to brown. Let rest for 20 minutes and serve.


Calories: 800kcal