Salisbury Steak Casserole: Whole30, Paleo, Gluten-Free - Whole Kitchen Sink (2024)

This Whole30 casserole is everything you love about classic salisbury steak, but it’s made with only the good stuff! Healthy, hearty and cozy, this salisbury steak casserole is loaded with ground beef, vegetables, a thick gravy, and baked all in one dish. It’s a perfect Paleo and gluten-free family friendly weeknight dinner, or a great meal prep recipe for leftovers that reheat wonderfully!

Whole30 Salisbury Steak Casserole Ingredients

This Whole30 ground beef casserole might not look the prettiest, but the ingredients that go into it make it totally delicious. The veggies you’ll need are onions, mushrooms and hash browns. It’s also great with some baby spinach or green pepper tossed in the mix too, if you want to up the veggie content even more!

To find Whole30 compliant hash browns (no sugar added), you can check a Super Target, Walmart, Fresh Thyme, or Sprouts, where I know they carry their own brand of compliant options, or the brand Mr. Dells or Cascadian Farms. You can used diced potatoes instead, but I do prefer hash browns in this because it helps to make this a really creamy dish!

Related: Whole30 Compliant Items at Target, Whole30 Compliant Items at Walmart, Whole30 Compliant Items at Fresh Thyme

The ingredients you’ll need for the salisbury steak casserole “gravy” include a few basic pantry spices, beef broth, coconut aminos, tomato paste, ghee, dijon mustard and arrowroot flour. I get all of these from Thrive Market for a discount (new members receive a $20 shopping credit!), but they’re also widely available at almost all grocery stores or Amazon. Make sure your dijon is a no sugar added variety, such as Thrive Market’s brand, the Target brand, Whole Foods or Annie’s.

How to Make Your Casserole

You’ll first start by preheating the oven to 350 degrees F., and browning the ground beef in a large skillet. You won’t season it yet, as the sauce or gravy will be heavily seasoned. It doesn’t need to be cooked all the way through, but enough that most of the grease has been cooked out and it’s crumbly. Then, transfer it to a strainer and let the grease drain really well. After that, you’ll use the same skillet to make the gravy. Do this by combining all of the ingredients for the gravy together, with the exception of the arrowroot, over medium heat.

Use a whisk to combine the dijon and tomato paste until it’s smooth. Let this come to a simmer and reduce a bit. You can let it simmer and reduce while taking care of chopping and adding everything into the casserole dish. In the dish, you’ll add the hash browns, sliced onion, mushrooms and beef.

Then, dissolve the arrowroot with water in a small dish, which helps prevent the flour from clumping and helps it thicken the gravy much better. Add it into the gravy, and whisk again for about 1 minute to thicken. Finally, pour it into the casserole dish, stir it in to combine with the beef and vegetables, and then pop it into the oven for 45 minutes to 1 hour, or until the top of the casserole no longer looks like there’s any liquid on top.

Other Whole30 Casseroles You’ll Love:

Chicken Bacon Alfredo Casserole

Creamy Sausage and Potato Casserole

Chicken Pot Pie Casserole

Easy Beef Taco Casserole

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