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30 Healthy Whole30 Casseroles

Trying to eat healthier in general or doing a Whole30? Well, you can still have a hearty, cozy casserole and stay on course!

With this round up of 30 healthy casseroles you have plenty of options for when you have the desire to whip up a big casserole for a cozy family dinner, meal prep or a freezer meal. Who knew Whole30 casseroles could be so delicious and comforting?

30 healthy casseroles collage horizontal with text

Dinner Recipes Only, No Egg Casseroles

Since there seems to be an abundance of Whole30 breakfast casserole recipes and round-ups already, for this post we decided to exclude egg casserole recipes. These 30 healthy casseroles will help you figure out what to have for dinner when you are craving a cozy meal during your Whole30!

We’ve rounded up 30 Whole30 casserole recipes from our site as well as a few from some of our favorite bloggers including Real Food With Jessica, Paleo Running Momma, Eat the Gains, The Whole Cook and I Heart Umami (plus a few others). We are certain that you can find just the healthy casserole you are craving in this list.

DOING A WHOLE 30? Check out our free 30-day printable Whole 30 meal plan with shopping lists.

Here are the 30 Healthy Casseroles

1. Spaghetti Pizza Casserole from Real Simple Good

Spaghetti pizza casserole image woman holding casserole dish - healthy casseroles

2. Zucchini Chicken Enchilada Casserole from Unbound Wellness

Zucchini chicken enchilada casserole in dish with avocado and radish toppings - healthy casseroles

3. Drunken Zoodle Chicken Casserole from Cotter Crunch

Drunken zoodle chicken casserole overhead picture with spoons - healthy casseroles

4. Paleo Buffalo Chicken Casserole from Real Food with Jessica

Paleo buffalo chicken casserole straight on shot of piece of casserole with green onions on top - healthy casseroles

5. Whole30 Chicken Broccoli Casserole from Downshiftology

Whole30 chicken broccoli casserole overhead in dish - healthy casseroles

6. Paleo Shepherd’s Pie from Paleo Running Momma

Paleo shepherd's pie in cast iron pan with spoon - healthy casseroles

7. Creamy Garlic Spaghetti Squash Casserole from Real Simple Good

Creamy garlic spaghetti squash casserole in dish with forks and spoon - healthy casseroles

8. Chicken Broccoli “Rice” Casserole from Paleo Running Momma

Chicken broccoli rice casserole overhead shot in casserole dish with spoon - healthy casseroles

9. Layered Taco Casserole from Living Loving Paleo

Layered taco casserole piece on plate  with tomato topping and fork - healthy casseroles

10. Spaghetti Squash and Meatball Casserole from Do You Even Paleo

Spaghetti squash and meatball casserole overhead shot with spoon and forks - healthy casseroles

11. Buffalo Ranch Chicken Casserole from The Whole Cook

Buffalo ranch chicken casserole overhead shot in circular dish - healthy casseroles

12. Beef and Cauliflower Rice Mexican Casserole from Every Last Bite

Beef and cauliflower rice mexican casserole in cast iron pan with tomato and green onion toppings - healthy casseroles

13. Whole30 Broccoli Casserole from The Defined Dish

Whole30 broccoli casserole overhead shot with nut toppings - healthy casseroles

14. Creamy Sausage Basil Tomato Spaghetti Squash from Paleo Running Momma

Creamy sausage basil tomato spaghetti squash overhead shot with hands holding dish - healthy casseroles

15. Green Bean Casserole from Real Food with Jessica

Green bean casserole overhead shot with bacon toppings - healthy casseroles

17. Easy Zucchini Casserole from Real Simple Good

Easy zucchini casserole overhead shot with spoon - healthy casseroles

17. Spaghetti Squash Pizza Casserole from Unbound Wellness

Spaghetti squash pizza casserole in dish angle shot with olive and mushroom toppings - healthy casseroles

18. Whole30 Tuna Zoodles Casserole from 40 Aprons

Whole30 tuna zoodles casserole with casserole dish and serving on plate with forks - healthy casseroles

19. Creamy Sausage and Potato Whole30 Casserole from Whole Kitchen Sink

Creamy sausage and potato whole30 casserole overhead shot with fork - healthy casseroles

20. Beef Taco Casserole from Eat the Gains

Beef taco casserole angle shot in glass dish with avocado topping - healthy casseroles

21. Creamy Chicken Casserole from Real Simple Good

Creamy chicken casserole in cast iron skillet with fork full of noodles coming out of dish - healthy casseroles

22. Creamy Chicken Mushroom Casserole from I Heart Umami

Creamy chicken mushroom casserole in gray dish with herbs - healthy casseroles

23. Jalapeño Tuna Casserole from Every Last Bite

Jalapeno tuna casserole angle shot with scoop out and spoon in dish - healthy casseroles

24. Simple Sausage Casserole from Paleo Leap

Simple sausage casserole in deep black dish, four sausages on top - healthy casseroles

25. Turkey, Broccoli and Mashed Cauliflower Layered Casserole from Living Loving Paleo

Turkey, broccoli and mashed cauliflower layered casserole overhead shot with piece on plate with fork - healthy casseroles

26. Healthy Chicken and Broccoli Casserole from Real Simple Good

Healthy chicken and broccoli casserole close up angle shot with spoon in dish - healthy casseroles

27. Whole30 Casserole with Chicken, Broccoli, Rice and Mushrooms from 40 Aprons

Whole30 casserole with chicken, broccoli, rice and mushrooms overhead shot with casserole dish and casserole in bowl with spoon - healthy casseroles

28. Paleo Spaghetti Squash Pastitsio from Food by Mars

Spaghetti squash pastitsio overhead shot with two plates and pieces on plates with forks - healthy casseroles

29. Bacon Jalapeno Popper Chicken Casserole from Mary’s Whole Life

30. Buffalo Chicken and Vegetable Casserole from Just Jessie B

Buffalo chicken and vegetable casserole overhead shot in casserole dish - healthy casseroles

Collage of 6 casseroles with text overlay of 30 whole30 dinner casserole recipes

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Collage of 6 casseroles with text overlay of 30 healthy casseroles

29 Whole30 Casseroles, Plus our Spaghetti Pizza Casserole

4.58 from 14 votes
Prep Time: 5 minutes
Cook Time: 1 hour 25 minutes
Total Time: 1 hour 30 minutes
Course: Main Course
Servings: 8
This Whole30 Spaghetti Pizza Casserole has all the makings of a pizza but it's dairy-free and made with real food ingredients. Plus, check out 29 more Whole30 casserole recipe ideas in this post!
Print Recipe Rate Recipe

Ingredients

  • 1 medium spaghetti squash
  • 1.5 lbs ground beef (can sub Italian Sausage)
  • 1 tbsp Italian seasoning (omit if you are using Italian Sausage)
  • 1 onion, diced
  • 6 cloves garlic, minced
  • 2 cups mushrooms, sliced
  • 10 leaves fresh basil, diced
  • 1 can olives, diced (15 oz)
  • 1 jar spaghetti sauce (25 oz)
  • 2 eggs (optional, if you omit the casserole just won’t “set” much like a traditional casserole)
  • 5 oz pepperoni slices

Optional toppings:

  • Chopped red onion
  • Chopped basil
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Instructions 

  • Preheat oven to 425° Fahrenheit.
  • Slice the spaghetti squash lengthwise and scoop out the seeds. Place the two halves face-down on a baking dish and place in the oven to bake for 25 minutes, or until the squash shreds easily but is not mushy.
  • While the squash is cooking, chop all of your other ingredients as noted and set aside.
  • Heat a large skillet over medium heat. Once hot, and add in the ground beef and onion. Cook, stirring occasionally, until the beef is browned. Season with Italian seasoning and mix. Taste and season with salt and pepper as desired and remove from heat.
  • Once cooked, remove the squash from the oven and lower the oven temperature down to 350° Fahrenheit. Allow the squash to cool for handling, about 5 minutes.
  • With a fork, scrape out the spaghetti squash “noodles” into a large bowl.
  • Add the cooked beef, garlic, mushrooms, basil, olives, spaghetti sauce and eggs (optional) to the bowl. Stir everything around to mix it well.
  • Dump 1/2 of the spaghetti squash mixture into a 9×13 casserole dish. Spread it around to make an even layer on the bottom of the dish. Top with a layer of 1/2 of the pepperoni.
  • Add on the other half of the spaghetti squash mixture and spread it around again to create an even layer. Top with a layer of the remaining pepperoni.
  • Place in the oven to cook for 30 minutes.
  • Remove and top with optional toppings as desired. Allow to cool for a few minutes, slice into pieces and serve.
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30 Healthy Whole30 Casseroles

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