Keto Low-Carb Philly Cheese Steak Casserole is a quick and easy steak dinner recipe with sirloin steak, cream cheese, green bell peppers, and mushrooms. This is the best steak marinade recipe and you can also use flank steak if you wish. If you are looking for sides to pair with your steak, going the casserole route is perfect! You get everything in one meal prep friendly dish.
Want to save this recipe for later?
I'll email it to you, so you can come back to it later! You will also get our free digital cookbook with 30-Minute One-Pot Recipes and weekly recipes and tips.
This post contains affiliate links. Please read my full disclosure here.
I am a much happier camper if I have my meals prepped for the week in advance. Casseroles make that really easy to do! Simply store this casserole in airtight containers and reheat throughout the week.
Is Steak Good for Keto?
Steak is perfect for keto because it is essentially carb-free! I recommend using grass-fed steaks because grass-fed has a better nutritional impact.
Is Bell Pepper Keto-Friendly?
Half a bell pepper has 3 net grams of carbs. For this recipe, that value is divided among 6 servings.
How Do You Make Garlic Butter Steak?
This Garlic Butter Steak from Taste of Home is amazing.
How Do You Make a Juicy Steak?
The key to a juicy steak is a good marinade and flavorful liquid! Check out my Marinated Steak recipe here.
Is Hummus Good for Keto?
I wouldn't recommend hummus for ketogenic lifestyles. Avocado will work much better and has macros perfect for keto.
Is This Philly Cheesesteak Casserole Recipe Freezer Friendly?
Yes. I recommend that you remove it from the freezer the night before you plan to eat it. Store it in the fridge overnight so that it defrosts naturally before you reheat.
Here are more Keto Dinner Recipes: Keto Spinach and Cheese Stuffed Chicken and Keto Bacon Cheeseburger Casserole.
Looking for Keto Desserts? You may also enjoy my Keto Peanut Butter Cookies, Keto Chocolate Chip Cookies, Keto Pound Cake, and Keto Cheesecake recipes.
You may also enjoy my Keto Cheeseburger Casserole , Keto Onion Rings, Lemon Pepper Steak,
and Bacon Egg Spinach Breakfast Casserole recipes.
Keto Low-Carb Philly Cheese Steak Casserole
Want to save this recipe for later?
I'll email it to you, so you can come back to it later! You will also get our free digital cookbook with 30-Minute One-Pot Recipes and weekly recipes and tips.
Equipment
Ingredients
- 1 ½ pounds Butcher Box sirloin steak sliced into thin strips
- 1 teaspoon Steak Seasoning I like McCormick's Montreal Steak Seasoning
- salt and pepper to taste
- 1 cup sliced green peppers
- 1 cup mushrooms
- 1 cup onion, chopped
- 2 garlic cloves, chopped
- 2 oz cream cheese
- 1 teaspoon worcestershire sauce
- 2 eggs
- ½ cup heavy whipping cream
- ½ cup shredded parmesan reggiano cheese
- 4-5 slices provolone cheese sliced into small pieces
Instructions
- Watch the video above for step by step instructions.
- Preheat oven to 350 degrees.
- Add the Butcher Box steak to a skillet on medium-high heat. Season the steak with steak seasoning, salt, and pepper. Cook for 2-3 minutes, flipping both sides of the steak.
- Add the green peppers, onion, garlic, and mushroom to the skillet. Cook until the vegetables are soft and the meat is no longer pink.
- If there is any excess fat in the skillet, drain it. This step is important. If there is excess liquid it will cause the casserole to have a soupy residue underneath.
- Add the Worcestershire sauce and cream cheese. Cook until the cream cheese has melted.
- Remove the skillet from heat.
- In a medium bowl, combine the eggs, shredded parmesan reggiano cheese, and heavy cream.
- Spray an 8 x 11 or 9x9 baking dish (I used 8 x11) with oil or cooking spray. Pour the steak mixture into the dish.
- Drizzle the liquid egg and cheese mixture on top. Top with the provolone cheese slices.
- Bake for 15-20 minutes or until the cheese begins to bubble. Mine was ready around 18.
- Cool before serving.
Video
Notes
Nutrition
Nutrition Data
Macros are provided as a courtesy and should not be construed as a guarantee. This information is calculated using MyFitnessPal.com. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator. You are solely responsible for ensuring that any nutritional information provided is accurate, complete, and useful.
Jane Saunders says
Wow, this looks very indulgent and tasty. Love the Worcestershire sauce in there.
Jayde says
I eat keto/ low carb. My boyfriend "refuses" to eat keto. However, since I found this website and various recipes, I've been sneaking in a few keto/ low carb recipes a week. This Philly Cheesesteak is his absolute favorite. And I love it too. It is so good, flavorable, and honestly you don't even miss the bread. I've made it about 3 times now. But could make it every night. It's quick to put together and the ingredients arent expensive.
staysnatched says
Awesome! I'm so glad you can sneak it in on him!
Liz says
My dad loves philly cheese steaks so even though he's not paleo, this is his kind of recipe! Thanks for sharing!
Aimee Shugarman says
This is our new favorite dinner recipe!!
Julie says
I love all of the flavors in this dish and that steak definitely looks delicious This is a dish anyone would love regardless of their diet plan and a sure winner for the Keto folks too!
Jennifer says
Do you know the macros for this by chance? Thank you!
staysnatched says
Yes, I document them at the top of every recipe post. Scroll up. Thanks!
Elizabeth says
This was so delicious & easy to make!!!
staysnatched says
I'm glad you enjoyed it!
Ashlee says
My new favorite Keto recipe! I made this tonight and its delicious! Even my super picky kids approved. Thanks for sharing this!
Diane says
I substituted one pound of thick sliced Boars Head London Broil for the steak. I used six thin slices of provolone. This was one of the best recipes I’ve ever made! Thanks for sharing!
staysnatched says
What an honor! I’m so glad you enjoyed the recipe.
Lisa Hurtubise says
I"m making this dish right now. It's in the oven and my house smells soooooo good! I can't wait to taste it! Thanks for the recipe! ~Lisa, North Bay, Ontario, Canada
staysnatched says
I hope you enjoyed it!
Jason says
I would like to freeze this. How long will it last in the freezer?
staysnatched says
I would recommend a couple of weeks. You can test to see if it will last longer.
Anonymous says
How many carbs a serving
staysnatched says
It's noted at the top of the post.
Justme says
@staysnatched, The carb count is not at the top of the post.
staysnatched says
It’s in the recipe card.
Robert says
We have a new family dinner favorite! Thank you!
Keith says
Just tried this, but I only had mozzarella on hand, omg it was amazing, I can't wait to try it with the good cheeses!!
staysnatched says
Wonderful! Glad you enjoyed it.
Davis says
How’s many servings for this dish?
Michele says
This was simple to make and delicious to eat!! I'm going to make this again soon! Next time, I might add some zucchini. Thanks for sharing this recipe!!
staysnatched says
You're welcome. Zucchini sounds like it would be amazing!
Leigh says
I made this tonight, a couple subs because I didn’t have the same cheese. Even my non-Keto friend loved it! Kudos!
staysnatched says
Yay! So happy you liked it!
J. Gard says
If I was going to freeze this dish would I bake it and then freeze or prep it, freeze it, then bake later?
staysnatched says
I would cook it first and then freeze.
Bobbette Kaufman says
I made this tonight it is absolutely amazing can’t wait for my husband to get home and try it thank you so much for sharing this wonderful recipe with the world
Wish I could give it a million star rating
staysnatched says
Omg thank you! I'm so glad you enjoyed it!
ERIN NJOROGE says
Hi wonderful recipe. I just finished eating! Question about the kcal. Is that 387 kcal for the whole recipe or per serving?
Thanks!
staysnatched says
Hi! It’s per serving.
SFASTW says
I’ll be trying this tonight with a few substitutes because I don’t have everything listed but can make due.. reading comments and that’s helpful.. going to try the zucchini
staysnatched says
Sounds great! Let me know what you think!
Tori says
Was wondering if I should cook, then refrigerate and warm up or if it’ll be fine to sit in egg mixture for a few hours. I usually prep and then wait to put in over until I get home from work.
staysnatched says
I wouldn't let it sit in the egg mixture.
Justin says
What could I use instead of egg for this recipe? I got an egg allergy almost 10 years ago after eating them for like 18 years.
staysnatched says
What do you normally substitute for your egg allergy? You can try that. Eggs are used to bind the casserole.
Teresa says
I made it without the eggs and it was delicious. It didn't have the same texture, but that didn't matter to me.
staysnatched says
Thank you!
Justin says
I normally avoid eggs when eating. They usually don't bother me in baked goods or like mayo. It's usually straight egg
Cathy says
Can I use steak-ums instead of steak? Because of COVID-19 Walmart is out of meat & others steaks are either to expensive or a bad cut.
Thank you
staysnatched says
I don’t know what steak-ums are. You can use any meat you want.
Carol Needham says
This recipe is fantastic. I used the great value philly cheesesteak meat that you get at Walmart in freezer section in the meat dept. I doubled the recipe with 2 boxes and used a 13×9 inch pan. It was literally FANTASTIC! I would of rated it higher if I could of. Also very easy to prepare.
staysnatched says
Awesome! I'm glad it worked out!
Amanda says
Hi if I used 2 pounds of steak can u tell me the measurements for the rest of ingredients please. Making for my family tonight don’t want to mess up. Thanks!
staysnatched says
You would increase the serving of the ingredients by 1/3rd.
Amanda says
I'm so glad I came across this recipe. I tweaked it a bit and added my own seasonings, used a blend of parmesan and asiago and added fresh cauliflower, I eyeball everything, but added an extra egg and a bit more of the heavy cream. It came out amazing!
staysnatched says
Glad you enjoyed it.
Eddie H says
" you can make that again"
I am the driving force for our family's keto journey. So I do most of the cooking. My wife loved this and said I should make it again.
The meal was easy to prepare and I had all the ingredients already in my kitchen.
Next time I'll make a double batch
Another great recipe!
staysnatched says
I loved seeing your photos! Glad you enjoyed it.
Miki thompson says
My family went crazy for this. It was so good they’re asking for me to make it again tomorrow.
staysnatched says
Yay! So glad to hear it!
Amy Cook says
Delicious! This will be in my favorites rotation! Super easy loved this dish!
staysnatched says
I'm glad you found the recipe easy!
Terri says
This was so good!!!! I made some substitutions to make it fit my calories and it tastes amazing! I can’t wait for leftovers tomorrow. Huge thanks for your video it was really helpful to reference during cooking.
staysnatched says
Wonderful! I'm glad the video helped.
Jamie says
Great recipe! This was simple to make and so delicious!
staysnatched says
Wonderful! So glad you enjoyed it!
Carrie m says
Recipe was good. Not crazy about the egg in it. I think it would be better with less egg and more cream cheese. I will try it again. Overall it was pretty good.
staysnatched says
Thanks for sharing. I don't taste the egg at all.
Neha Shrivastava says
This is a great recipe I will try this at home. Thanks for sharing.
staysnatched says
You're welcome. I hope you enjoy!
JoAnne says
This was so so good! My whole family gobbled it up! Thank you for sharing this! I was nervous about the egg flavor, but I don’t taste the eggs at all! Amazing dish! Definitely added to our regular family meal schedule. Thank you!
staysnatched says
Glad you enjoyed it! And nope you don’t taste the egg.
Jess says
So good! I shared the recipe with several friends!
staysnatched says
Thank you for sharing!
Misty McCubbins says
This was amazing. My kids and husband loved it!
staysnatched says
Awesome! So glad I could impress the kids.
L says
?My egg mixture turned to scrambled eggs while the casserole was cooking. We still ate it and it wasn't bad - but we know it would be amazing minus the scrambled egg chunks. Any idea what I could have done to cause them to scramble? I want to this recipe again. TIA!!
staysnatched says
I'm not sure. You will have to walk me through what you did. This has never happened to anyone. Did you follow the recipe exactly without any substitutions?
Chris says
@L, did you mix the egg, Parmesan and heavy cream all together and then pour it over the steak and vegetables? If not, that’s probably where it went wrong.
Jessica says
I recently went low carb and stumbled across this recipe. Not only is the recipe super easy, but it sooo delicious! Certainly to be a staple in my house!
staysnatched says
Yay! I'm glad it's a staple.
Aimee Micek says
Loved this dish! This recipe was so easy to follow and turned out perfectly. We will be adding it to our regular rotation. Thank you!
staysnatched says
You're welcome. I'm glad you enjoyed it!
Lindsay says
Amazing recipe! I was looking for a Philly cheesesteak casserole that was with steak and not ground beef for some time. And I found it here! And it was AMAZING! whole family loved it!
staysnatched says
Glad the family loved it!
Jenn says
I made this last week and it was amazing!! My football coach of a husband just about ate the entire dish! it was also super simple and quick which is super convenient. THANK YOU!!
staysnatched says
You're welcome! I'm happy you found it convenient.
agreso says
My dad loves philly cheese steaks so even though he’s not paleo, this is his kind of recipe! Thanks for sharing!
staysnatched says
You're welcome! I'm glad you both enjoyed the recipe!
Wanda says
Delicious recipe.
staysnatched says
I'm glad you enjoyed it!
Michelle says
Will this still be okay without the mushrooms? Should I try to sub it with another veggie? If so what can I use?
I already started making it and found out that all the mushrooms have been used by someone else.
staysnatched says
You can add any veggies you like.
Liz says
I tried this recipe tonight on my family of 4..I used grass fed Ground beef in place of steak and left out the mushrooms..
But my family are it up like crazy..and loved every bite
staysnatched says
I'm glad you all loved it!
Linda says
I was trying to put the nutrition facts in my app. Is a serving really 6 grams?
staysnatched says
No, the dish makes six servings.
Mikayla says
Easy weeknight dinner that was full of flavor. The teens in my house are it on a roll and the adults ate it as is. Will definitely make again!
staysnatched says
I'm glad to hear it.
Brandy says
Would this be good on a hoagie bun for non keto eaters?
staysnatched says
Maybe. I’ve never tried it.
Suzy says
Great flavor and easy to make! Husband and kid approved too!
staysnatched says
That's so good to hear!