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?

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

Dinner Recipes Only

Since there seems to be an abundance of Whole30 breakfast casserole recipes and round-ups already, for this post we decided to include only dinner 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 are certain that you can find just the healthy casserole you are craving in this list.

Here are the 30 Healthy Casseroles


Creamy Garlic Spaghetti Squash Casserole (Paleo, Whole30, GF + Dairy-Free)

4.40 from 538 ratings
This creamy garlic spaghetti squash casserole is so saucy and delicious! It has a creamy, Paleo, Whole30 + Dairy-Free sauce packed with garlicky goodness.
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Healthy Chicken and Broccoli Casserole (Paleo + Whole30)

4.45 from 109 ratings
As part of our weekly meal prep, we love to make a big dinner Sunday, like this Paleo + Whole30 healthy chicken and broccoli casserole and have the leftovers in the fridge the following week. This casserole is a great, Paleo + Whole30 family-friendly and large dinner recipe!  
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Healthy Baked Buffalo Chicken Casserole

4.75 from 63 ratings
We made this healthy baked chicken casserole Paleo, Whole30 and Low Carb, and with a simple modification it can also be made Keto. It's perfect for a family meal or meal prep!
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Spaghetti Pizza Casserole (Paleo + Whole30)

4.68 from 43 ratings
This Paleo + Whole30 Spaghetti Pizza Casserole is about to be a new family favorite! It’s perfect for your weekend meal prep, and the whole family will enjoy this hearty and flavorful casserole!
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Creamy spinach artichoke chicken casserole in a casserole dish with a serving spoon dug in.

Oven Baked Creamy Spinach Artichoke Chicken Casserole

4.74 from 42 ratings
This dairy free spinach artichoke chicken casserole is full of creamy goodness in addition to having plenty of veggies baked right in!
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Creamy Chicken Casserole (Paleo, Whole30 + Dairy-Free)

4.70 from 39 ratings
This Paleo + Whole30 Creamy Chicken Casserole is made with spaghetti-squash so it’s grain-free, gluten-free and the creamy, cheese-like sauce is dairy-free!
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Easy Taco Casserole (Paleo, Whole30 + Keto)

4.78 from 22 ratings
This Paleo, Whole30 + Keto easy taco casserole is a great meal prep recipe, and the healthy casserole leftovers are perfect for re-heating for lunches!
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Easy Zucchini Casserole (Paleo, Whole30 + Keto)

4.80 from 15 ratings
This simple and healthy casserole is great for a busy weeknight and for making leftovers. 
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BBQ Chicken Casserole (Paleo, GF, Dairy-Free + Refined Sugar-Free)

4.53 from 19 ratings
We love when spaghetti squash is in season, so we can make this Paleo BBQ Chicken Casserole. It’s a cleaner and healthier way to enjoy total comfort food! 
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Italian Sausage Casserole (Paleo + Whole30)

4.75 from 16 ratings
With a creamy, smoky sauce that's baked in with all the other savory ingredients, this Italian sausage casserole is a different type of healthy casserole.
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Healthy Ground Pork Dinner Casserole

4.80 from 15 ratings
This healthy casserole recipe roasts ground pork, spiralized zucchini, sweet potatoes, and regular potatoes all together in one dish in the oven for 40-50 minutes. Once the combined ingredients cook through, toss everything in a simple, savory homemade sauce made with coconut aminos, apple cider vinegar and select seasonings, and enjoy! This ground pork and vegetable dinner is Whole30 and Paleo diet friendly.
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Zucchini Chicken Enchilada Casserole from Unbound Wellness

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

Drunken Zoodle Chicken Casserole from Cotter Crunch

Drunken zoodle chicken casserole overhead picture with spoons - healthy casseroles

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

Paleo Shepherd’s Pie from Paleo Running Momma

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

Chicken Broccoli “Rice” Casserole from Paleo Running Momma

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

Layered Taco Casserole from Living Loving Paleo

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

Spaghetti Squash and Meatball Casserole from Do You Even Paleo

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

Buffalo Ranch Chicken Casserole from The Whole Cook

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

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

Whole30 Broccoli Casserole from The Defined Dish

Whole30 broccoli casserole overhead shot with nut toppings - healthy casseroles

Creamy Sausage Basil Tomato Spaghetti Squash from Paleo Running Momma

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

Green Bean Casserole from Real Food with Jessica

Green bean casserole overhead shot with bacon toppings - healthy casseroles

Spaghetti Squash Pizza Casserole from Unbound Wellness

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

Creamy Sausage and Potato Whole30 Casserole from Whole Kitchen Sink

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

Beef Taco Casserole from Eat the Gains

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

Creamy Chicken Mushroom Casserole from I Heart Umami

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

Jalapeño Tuna Casserole from Every Last Bite

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

Simple Sausage Casserole from Paleo Leap

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

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

Paleo Spaghetti Squash Pastitsio from Food by Mars

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

Bacon Jalapeno Popper Chicken Casserole from Mary’s Whole Life

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Collage of 6 casseroles with text overlay of 30 healthy casseroles

4.68 from 34 ratings
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29 Whole30 Casseroles, Plus our Spaghetti Pizza Casserole

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!


  • 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


  • 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