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HomeMealtimeRecipesSlow Cooker Recipes

Slow Cooker Mushroom Spinach Lasagna Recipe

5 from 1 vote
Angela SellariBy Angela Sellari
Angela Sellari
Angela Sellari Founder of AboutAMom

Angela is the founder of About A Mom and currently acts as a content creator and editor-in-chief for the About A Mom Team. She has been a professional blogger for over 10 years. Angela has appeared…

Expertise: Content Creation & Editing View all posts →
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I love Italian food. I really LOVE anything dish with tomatoes. There is nothing better than a good red sauce. I have been working on my family tree the last few months, and am astonished that I don’t have any roots tracing back to Italy. How could that be? I wonder if there is any such thing as an honorary Italian.

Slow cooker mushroom spinach lasagna with a bubbly, melted cheese topping.

Slow Cooker Mushroom Spinach Lasagna

Ingredients:

PAM® Original No-Stick Cooking Spray
1 tablespoon olive oil
1 pkg (8 oz each) fresh sliced mushrooms
1 pkg (6 oz each) baby spinach leaves
1 can (14.5 oz each) Hunt’s® Diced Tomatoes with Basil, Garlic and Oregano, undrained
2 cups Hunt’s® Tomato Sauce
1/2 teaspoon dried Italian seasoning
1/4 teaspoon salt
1 container (8 oz each) part-skim ricotta cheese
1/2 cup Kraft® Grated Parmesan Cheese, divided
1/4 teaspoon ground black pepper
6 dry lasagna noodles, uncooked
1-1/2 cups shredded Italian blend cheese, divided

Directions:

Step 1: Spray inside of 4-quart slow cooker with cooking spray. Heat oil in large skillet over medium-high heat. Add mushrooms; cook 3 minutes, stirring occasionally. Add spinach; cook 3 minutes more or until mushrooms are tender and spinach is wilted, stirring occasionally. Stir in undrained tomatoes, tomato sauce, Italian seasoning and salt. Bring to a boil. Reduce heat and simmer 3 minutes, stirring occasionally. Meanwhile, combine ricotta cheese, 1/4 cup Parmesan cheese and pepper in small bowl; set aside.

Simmering mushroom and spinach tomato sauce in a skillet with cans of tomatoes.

Step 2: Spread 3/4 cup sauce mixture over bottom of slow cooker. Layer 3 lasagna noodles over sauce mixture, breaking noodles to fit. Top with 3/4 cup sauce mixture, ricotta cheese mixture and 1 cup Italian cheese. Top with 3/4 cup sauce mixture and remaining 3 lasagna noodles, breaking to fit. Spoon remaining sauce mixture over noodles.

Vegetarian Slow Cooker Lasagna

Step 3: Cover; cook on LOW 5 hours or until noodles are tender. Sprinkle with remaining 1/2 cup Italian cheese and remaining 1/4 cup Parmesan cheese. Cover; let stand 5 minutes or until cheese melts.

Slow Cooker Mushroom Spinach Lasagna with melted Italian cheese and a serving spoon.

Slow Cooker Mushroom Spinach Lasagna with melted Italian cheese and a serving spoon.

Slow Cooker Mushroom Spinach Lasagna Recipe

Angela Sellari
Layer up a comforting Slow Cooker Mushroom Spinach Lasagna recipe. This vegetarian dish is packed with cheesy goodness & tender veggies for a cozy dinner.
5 from 1 vote
Print Recipe Pin Recipe
Prep Time 15 minutes mins
Cook Time 5 hours hrs
Wait Time 5 minutes mins
Total Time 5 hours hrs 20 minutes mins
Course Main Course, pasta recipes
Cuisine Italian
Servings 8
Calories 158 kcal

Ingredients
  

  • PAM® Original No-Stick Cooking Spray
  • 1 tablespoon olive oil
  • 1 pkg 8 oz each fresh sliced mushrooms
  • 1 pkg 6 oz each baby spinach leaves
  • 1 can 14.5 oz each Hunt’s® Diced Tomatoes with Basil, Garlic and Oregano, undrained
  • 2 cups Hunt’s® Tomato Sauce
  • 1/2 teaspoon dried Italian seasoning
  • 1/4 teaspoon salt
  • 1 container 8 oz each part-skim ricotta cheese
  • 1/2 cup Kraft® Grated Parmesan Cheese divided
  • 1/4 teaspoon ground black pepper
  • 6 dry lasagna noodles uncooked
  • 1-1/2 cups shredded Italian blend cheese divided

Instructions
 

  • Spray inside of 4-quart slow cooker with cooking spray. Heat oil in large skillet over medium-high heat. Add mushrooms; cook 3 minutes, stirring occasionally. Add spinach; cook 3 minutes more or until mushrooms are tender and spinach is wilted, stirring occasionally. Stir in undrained tomatoes, tomato sauce, Italian seasoning and salt. Bring to a boil. Reduce heat and simmer 3 minutes, stirring occasionally. Meanwhile, combine ricotta cheese, 1/4 cup Parmesan cheese and pepper in small bowl; set aside.
    Simmering mushroom and spinach tomato sauce in a skillet with cans of tomatoes.
  • Spread 3/4 cup sauce mixture over bottom of slow cooker. Layer 3 lasagna noodles over sauce mixture, breaking noodles to fit. Top with 3/4 cup sauce mixture, ricotta cheese mixture and 1 cup Italian cheese. Top with 3/4 cup sauce mixture and remaining 3 lasagna noodles, breaking to fit. Spoon remaining sauce mixture over noodles.
    Vegetarian Slow Cooker Lasagna
  • Cover; cook on LOW 5 hours or until noodles are tender. Sprinkle with remaining 1/2 cup Italian cheese and remaining 1/4 cup Parmesan cheese. Cover; let stand 5 minutes or until cheese melts.
    Slow Cooker Mushroom Spinach Lasagna with melted Italian cheese and a serving spoon.

Nutrition

Calories: 158kcalCarbohydrates: 20gProtein: 8gFat: 6gSaturated Fat: 2gSodium: 480mgFiber: 2g
Keyword Slow Cooker Mushroom Spinach Lasagna
Tried this recipe?Let us know how it was!

About Angela SellariContent Creation & Editing

Angela is the founder of About A Mom and currently acts as a content creator and editor-in-chief for the About A Mom Team. She has been a professional blogger for over 10 years. Angela has appeared in numerous TV segments, advertising campaigns and her work has been featured by many top publications. She lives in Tampa, Florida.

Reader Interactions

Published: Oct 15, 2014 | Updated: May 14, 2026
5 from 1 vote (1 rating without comment)

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Recipe Rating




  1. Nina Say says

    Posted on 10/16 at 10:07 PM

    I love when a recipe is designed for a slow cooker, and I love lasagna so this is a win win.

    Reply
  2. Cindy (Vegetarian Mamma) says

    Posted on 10/16 at 10:29 PM

    Thanks for the awesome recipes! And for the twitter party invite!

    Reply
  3. rochkirstin says

    Posted on 10/16 at 10:59 PM

    We also love Italian food and anything with tomatoes especially when they’re fresh! Thanks for the recipe. Now I’m hungry and it’s nearly lunch time.

    Reply
  4. Laura MyNewestAddiction.com says

    Posted on 10/16 at 11:35 PM

    What a fabulous recipe!

    Reply
  5. Estelle says

    Posted on 10/16 at 11:53 PM

    This looks like such a delicious recipe for us to make in our slow cooker. Even my little daughter can help me make this one.

    Reply
  6. Margarita Ibbott (@DownshiftingPRO) says

    Posted on 10/16 at 11:54 PM

    That lasagna looks so good. I will try and make the twitter party. Thanks for the recipe.

    Reply
  7. Tammy says

    Posted on 10/17 at 1:01 AM

    I have never thought to make lasagna in the slow cooker. What a fantastic idea for a fix it and forget it meal!

    Reply
  8. Lavende & Lemonade says

    Posted on 10/17 at 1:26 AM

    I love veggie lasagna! And I had no idea it is tomato month, very interesting!

    Reply
  9. Anne - Mommy Has to Work says

    Posted on 10/17 at 9:55 AM

    I’m starving over here looking at that. It looks so easy and so good!

    Reply
  10. Ann Bacciaglia says

    Posted on 10/17 at 12:46 PM

    I love crock pot recipes. This looks so delicious i can not wait to try it. This will be perfect for Sunday.

    Reply
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