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.
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FOR THE FULL LIST OF INGREDIENTS AND COMPREHENSIVE INSTRUCTIONS, PLEASE SEE THE RECIPE CARD AT THE END OF THIS POST. BEFORE YOU SCROLL, THERE’S IMPORTANT INFORMATION IN THIS BLOG POST.
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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.
I use Butcher Box sirloin steak in this recipe because it is 100% grass-fed beef. Grass-fed beef is much leaner and has less total fat. It also has more conjugated linoleic acid (CLA), which is linked to reductions in heart disease and cancer.
You may also enjoy my Keto Cheeseburger Casserole and Bacon Egg Spinach Breakfast Casserole recipes.
FREE printable Keto Grocery Shopping list here.
Keto Low-Carb Philly Cheese Steak Casserole
Ingredients
- 1 1/2 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
- 1/2 cup heavy whipping cream
- 1/2 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 9×9 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.
Lindsay
Sunday 8th of November 2020
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
Tuesday 10th of November 2020
Glad the family loved it!
Aimee Micek
Wednesday 4th of November 2020
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
Friday 6th of November 2020
You're welcome. I'm glad you enjoyed it!
Jessica
Tuesday 27th of October 2020
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
Thursday 29th of October 2020
Yay! I'm glad it's a staple.
L
Sunday 25th of October 2020
?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
Monday 26th of October 2020
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?
Misty McCubbins
Thursday 22nd of October 2020
This was amazing. My kids and husband loved it!
staysnatched
Monday 26th of October 2020
Awesome! So glad I could impress the kids.