Slow-Cooker Vegetable Lasagna


This vegetarian lasagna couldn't be easier, thanks to jarred pasta sauce and no-boil lasagna noodles. Prep it in the morning and let your crock pot do the work.

Prep Time:
30 mins
Additional Time:
6 hrs
Total Time:
6 hrs 30 mins
8 cups


  • 1 large red bell pepper, chopped

  • 4 ounces cremini mushrooms (about 3 large), chopped

  • 2 cups packed baby spinach, coarsely chopped

  • 1 (24 ounce) jar low-sodium red pasta sauce, any flavor

  • 1 (15 ounce) can no-sodium-added diced tomatoes, undrained

  • 15 ounces part-skim ricotta cheese

  • ¾ cup freshly grated Parmesan cheese, divided

  • 8 ounces oven-ready lasagna noodles (about 9 total)

  • 2 cups shredded part-skim mozzarella cheese

  • ¼ cup chopped fresh basil


  1. Combine bell pepper, mushrooms, and spinach in a medium bowl. Combine pasta sauce, tomatoes, ricotta, and 1/2 cup Parmesan in a large bowl.

  2. Spread 1 cup of the sauce mixture in a 6-qt. slow cooker. Place 3 noodles over the sauce, breaking them as needed to fit in one layer. Spread another 1 cup sauce over the pasta. Layer on one-third of the vegetable mixture, 3 more noodles, and 1 cup sauce. Sprinkle with 1/2 cup mozzarella. Continue layering one-third of the vegetables, 1 cup sauce, 1/2 cup mozzarella, and the remaining noodles. Top with a final layer of the remaining vegetables, the remaining sauce, and the remaining 1 cup mozzarella.

  3. Cover and cook on Low for 5 hours.

  4. Turn off and unplug the slow cooker. Let the lasagna stand, covered, for 1 hour (see Tip). Serve topped with the remaining 1/4 cup Parmesan and basil.


Tip: To prevent condensation building up on the underside of the lid during the 1-hour rest time, place a paper towel under the lid during the rest time.

Equipment: 6-qt. slow cooker

Nutrition Facts (per serving)

344 Calories
13g Fat
37g Carbs
21g Protein
Nutrition Facts
Servings Per Recipe 8
Calories 344
% Daily Value *
Total Carbohydrate 37g 14%
Dietary Fiber 3g 12%
Total Sugars 9g
Protein 21g 42%
Total Fat 13g 16%
Saturated Fat 7g 35%
Cholesterol 41mg 14%
Vitamin A 2691IU 54%
Vitamin C 40mg 45%
Folate 114mcg 28%
Sodium 423mg 18%
Calcium 447mg 34%
Iron 3mg 16%
Magnesium 33mg 8%
Potassium 370mg 8%

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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