Spinach Ricotta Slow Cooker Lasagna

Prep Time 30 minutes
Total Time 4 hours
Servings 8

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This Spinach Ricotta Slow Cooker Lasagna is as easy as it gets — no cooking meat or lasagna noodles beforehand! Just layer everything in the crockpot and let it cook. Perfectly cheesy and loaded with spinach!

tall overhead image of piece of slow cooker lasagna on blue plate with fresh basil sprinkled on top

SO. Slow Cooker Lasagna?!?

That’s right, friends.

overhead image of black slow cooker with whole slow cooker lasagna and melted cheese on top

I’m not actually sure why I’ve never tried a slow cooker lasagna before today. As I’ve mentioned before, once I learned how to cook pasta in the slow cooker, my life was forever changed. This Slow Cooker BBQ Chicken Chili Mac, and this Healthier Slow Cooker Hamburger Helper are proof.

And interestingly enough, this is my second slow cooker pasta recipe this week. I posted this Slow Cooker Baked Ziti on Monday for National Pasta Day!

square image of piece of slow cooker lasagna on blue plate on grey background

This recipe is from my friend Samantha’s new cookbook, Real Food Slow Cooker Suppers. I was so excited to get this cookbook and share it with you guys! It’s full of two of my favorite things: (1) Real Food and (2) slow cooker recipes!

In this crazy time of year, I think you can agree we all need more of them!

slow cooker spinach lasagna on blue plate with fork taking a bite

I was so happy with how this lasagna worked out! Not to mention the house smells amazing while it’s cooking.

I love having a few 3-4 hour slow cooker recipes on hand for those days when you’re going to be out of the house just before dinner time for one occasion or another, and you want to come back and have it all ready for you. It’s perfect for weekends with the family!

You can grab a copy of Samantha’s book over on Amazon or anywhere books are sold 🙂

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Spinach Ricotta Slow Cooker Lasagna

5 from 4 votes
This Spinach Ricotta Slow Cooker Lasagna is as easy as it gets — no cooking meat or lasagna noodles beforehand! Just layer everything in the crockpot and let it cook. Perfectly cheesy and loaded with spinach!
Prep Time 30 minutes
Cook Time 3 hours 30 minutes
Total Time 4 hours
Cuisine American
Course Main Course
Servings 8
Calories 570cal


  • 30 oz frozen, chopped spinach, thawed and drained well (about 550g)
  • 15 oz container ricotta cheese (I use light) 425g
  • 1 egg
  • 1 teaspoon dried parsley
  • 1 3/4 cups grated Parmesan cheese divided
  • 48 oz jars tomato pasta sauce (about 6 cups) 1360g
  • 1/2 cup water
  • 3 tablespoons tomato paste
  • 1 tablespoon Italian seasoning
  • 1/2 teaspoon garlic powder
  • 1 pinch of red pepper flakes
  • 12 uncooked lasagna noodles not oven-ready
  • 4 cups shredded Mozarella cheese


  • In a large bowl, combine the spinach, ricotta, egg, parsley and ¾ cup Parmesan cheese.
  • In another large bowl, combine the pasta sauce, water, tomato paste, Italian seasoning, garlic powder and red pepper flakes.
  • Lightly grease a 6 quart slow cooker. Spoon ½ cup tomato sauce into the bottom of the slow cooker and spread into a thin layer.
  • Place 3 lasagna noodles in the bottom, breaking to fit if necessary. Spread ¼ of the ricotta mixture over noodles, and top with ¼ of the sauce. Sprinkle with 1 cup mozzarella cheese and 2 tablespoons Parmesan.
  • Repeat layers 3 times, starting with the noodles and ending with the cheese. Cover slow cooker and cook on low for 3.5-4 hours until noodles are tender but not overcooked. Turn off the slow cooker and let lasagna set for 30 minutes before slicing and serving.

Nutrition Information

Calories: 570cal | Carbohydrates: 41g | Protein: 33g | Fat: 31g | Saturated Fat: 16g | Cholesterol: 102mg | Sodium: 1698mg | Fiber: 7g | Sugar: 13g

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Meet Ashley

My name is Ashley Fehr and I love creating easy meals my family loves. I also like to do things my way, which means improvising and breaking the rules when necessary. Here you will find creative twists on old favorites and some of my favorite family recipes, passed down from generations!

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Reader Interactions


  1. Lauren says

    This was so delish, but I made one modification – 30 ounces was way too much spinach! I only had two 12 ounce bags of frozen spinach, so I really only used 24 and I still thought that was too much. Next time, I will take it down to just one 12 ounce bag of frozen chopped spinach.

  2. Tyler says

    This was my first try at any lasagna and wow- was it easy to make! This recipe is amazing! My whole family really enjoyed it. Very thick, cheesy and flavourful. I followed the recipe to the letter, with the exception of using regular ricotta as opposed to light. Mine was ready in 3 hours on low and 30 min to set. ou won’t be disappointed!

  3. Jen says

    Anybody else doing this might want to make frozen ready for the crockpot meals to include with their gift, or even as a gift. Made a bunch of meals for my kids when they had a baby, included directions written on freezerbag ( di that before filling). They loved them. They stacked them in freezer and pulled them out for the busy days.

  4. lynn says

    Hello! I’m a little late to this lasagna party but I was wondering, why can’t we use oven-ready sheets? It’s what I have handy but it’s too hot where I am to turn on the oven right now, so I’m hoping this recipe is the answer. Thanks in advance!

  5. Cheyanne @ No Spoon Necessary says

    I saw the title of this and I immediately thought Slow Cooker LASAGNA?! And then I read your first line and I had to laugh. Clearly you are a mind reader. 😉 I am freaking out over how genius this is Ashley!! Seriously, where do you come up with all these beyond fabulous ideas?! I am TOTALLY making this next week for dinner! And if Boy is lucky I will share. Lol. Pinned! Cheers!

  6. Shelby @ Go Eat and Repeat says

    Yummy! I can’t believe I’ve never thought of slowcooker lasagna before either! I love how creamy it looks!

  7. Dorothy Dunton says

    Hi Ashley! Another winner! I always add spinach to my lasagna, not necessarily for the added veg but because I just plain like it! I think I’m going to get my son a slow cooker for Christmas, along with a compilation of recipes. He likes to cook, but he is a busy guy and I know some nights he just isn’t up for cooking.

  8. Sarah @ The Gold Lining Girl says

    Say no more… you had me at slow-cooker! You also had me at lasagna though – I’m an Italian food fanatic, so I can never have enough slow-cooker recipes or Italian recipes. Also taking note of your Ziti recipe! You are nailing it with awesome dinners this week, lady!

5 from 4 votes (1 rating without comment)

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