This Keto Beef Stroganoff Casserole is a stroganoff-style spin on the classic Shepherd’s Pie. Savory ground beef, mushrooms and onions in gravy are baked with a creamy cheesy mashed cauliflower topping for the ultimate low carb comfort food.

❤️ Why You’ll Love This Beef Stroganoff Casserole Recipe

• Savory ground beef
• Fresh mushrooms, onion and garlic
• Simmered in a savory stroganoff flavored sauce
• Topped with cheesy mashed cauliflower and baked
• Fun stroganoff-style spin on Shepherd’s Pie
• Family friendly

A hearty and delicious family favorite with a twist! Ground beef replaces sliced beef in this stroganoff for a quick and easy version that is great for any night of the week.

Rich and creamy “Shepherd’s Pie” style stroganoff, with the addition of Cheesy Mashed Cauliflower over the top.  This is truly one of the best Keto casseroles with ground beef and leftovers are even better the next day!

The key to making cauliflower a potato like consistency is to cook it in the microwave and then squeeze out all the extra moisture. Even non-Keto family members will love the flavor it provides this casserole

🛒 Ingredients for Ground Beef Stroganoff

• Ground beef
• Cheesy Mashed Cauliflower
• Onion
• Garlic
• Baby bella mushrooms
• Beef broth
• Sour cream
• White wine
• Butter
• Worcestershire sauce
• Xanthan gum

*Exact measurements are listed in the recipe card below.

🥣 Recommended Tools

• Large skillet or Dutch oven
• Casserole baking dish

🔪 How to Make Beef Stroganoff Casserole

Prepare a batch of Keto Cheesy Mashed Cauliflower, then set aside while you prepare the filling.

Brown the ground beef in a large pot with half the salt and pepper.

Then remove and set aside.

Add the butter to the pan and sauté the mushrooms over medium heat, until you have some good color on them.  

Remove and set them aside, then sauté the onions with the remaining salt and pepper for a few minutes.  Then add in the garlic for about 20 seconds.  Careful not to burn the garlic.

Pour in the white wine to deglaze the pan, scraping up any brown bits of flavor.  Add in the beef broth and whisk in the xanthan gum, then simmer for 2-3 minutes to thicken slightly.

Preheat your oven to 400°F.

Add in the remaining ingredients, except for the cheesy mashed cauliflower and stir until well combined.

Stir in the ground beef and sautéed mushrooms and allow to cook for 5 minutes.  

Pour the mixture into a 9″ x 13″ casserole dish that’s been sprayed with nonstick spray and spread evenly.  

Add the cheesy mashed cauliflower over the top in large dollops, and spread using an offset spatula and bake for 20 minutes.  

Allow to cool slightly before cutting into and serving.

☑️ Storage Instructions

Store leftover casserole in an airtight container in the fridge for 3-4 days or freeze.

🍴 What to Serve with Hamburger Casserole

• Green Beans Almondine
• Air Fryer Zucchini
• Cheesy Roasted Asparagus
• Shredded Brussels Sprouts

💡 Tips Low Carb Beef Stroganoff

• You can make this recipe a day before you need it. Just assemble it and store in the fridge. Baking time will increase due to it being chilled.
• Make sure to get some good color on both your ground beef and mushrooms when cooking them in the skillet. This will help give the casserole more flavor.
• If you have leftovers, this casserole will freeze well. Place it in an airtight freezer safe container and store up to a couple of months. To thaw, place in the fridge overnight.
• Because mushrooms shrink considerably when cooked, be sure to slice them rather thick, preferable 1/4 inch.
• If you’d rather skip the white wine, just substitute with additional broth.
• If you want extra cheesiness, add a little shredded cheddar to the top, right before you remove it from the oven.
• Beef bone broth can be used to substitute the beef both in this recipe.

🔄 Substitutions and Additions

• The Xanthan gum is used to help thicken the sauce. If you prefer not to use it, you can just omit it or use your favorite Keto friendly thickener instead.
• For a milder onion flavor, you can use diced shallots instead. Leeks would also work well in this casserole.
• If you don’t have beef broth, you can use chicken broth instead.
• If you want the cheesy mashed cauliflower to have a more smokey flavor, you can use my Cottage Cheese Mashed Cauliflower instead, as it has smoked gouda in them that gives a great smoky flavor.
• For some fresh herbs, you can add in 2 teaspoons of fresh thyme.

Is there a keto-friendly stroganoff recipe?

Absolutely! Not only is this Beef Stroganoff Casserole Keto friendly, but my Easy Beef Stroganoff and Chicken Stroganoff are as well!

Is beef stroganoff good for a keto diet?

Because all of the ingredients in this recipe are low in carbs, high in protein and healthy fats, it’s actually ideal for a Keto diet.

Is sour cream necessary in beef stroganoff?

It really is, in order to get that rich creaminess and classic tang.

Can I use Greek yogurt instead of sour cream for beef stroganoff?

Yes you sure can, just make sure you are using a full fat Greek yogurt that is also low in carb. it won’t have the exact same tang, but will actually be higher in protein.

Are There Carbs in Keto Stroganoff?

Traditional stroganoff that uses pasta has way too many carbs to even consider for those on Keto or low carb diets.

With this Keto beef stroganoff casserole, that worry is taken away by replacing the pasta with cheesy cauliflower, which adds so much flavor but removes all but 5 net carbs per serving!

Another key component to the texture and richness of this Keto stroganoff recipe are the baby bella mushrooms. Of course you can use any of your favorite mushrooms in their place.

What can I use instead of noodles for beef stroganoff?

For this casserole recipe, I top the casserole with some cheesy mashed cauliflower to make it a complete meal. If you make my other stroganoff recipes, they also be served over my cheesy mashed cauliflower, cauliflower rice, spaghetti squash or zucchini noodles as alternatives to traditional noodles.

🍽️ More Keto Ground Beef Recipes

• Picadillo
• Bacon Cheeseburger Casserole
• Poblano and Cheese Stuffed Meatloaf
• Instant Pot No-Bean Chili
• Lasagna Stuffed Zucchini Boats

*Originally published on March 26, 2019, updated on October 22, 2026 with improvements to the recipe, new photos, new recipe information and helpful tips.