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.
This post contains affiliate links. Please read my full disclosure here. As an Amazon Associate, I earn from qualifying purchases.
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.
Let this 21 Day Fall and Winter Meal Plan do all of the heavy lifting for you! It includes: Recipes: Breakfast, Lunch, Dinner, and Snacks, Grocery List (itemized and weekly), Grocery Budget Spreadsheet, Trader Joe’s and Costco Grocery List, Vegetable Freezing Chart, Ice Cream Recipes, What to Order at Fast Food Restaurants, Low Carb Keto Lifestyle Background, how ketosis works, and how to stay in ketosis, Low Carb Dining Out Guide (what to order), and a Low Carb Travel Guide (how to travel and stay low carb).
Snag your Keto Meal Plan 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.
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 , Keto Onion Rings, 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.
Suzanne
Monday 18th of October 2021
The recipe looks delicious.
staysnatched
Friday 22nd of October 2021
I hope you enjoy it.
Heather
Saturday 21st of August 2021
This looks delicious! If it’s anything like your shrimp fettucine with zuchinni noodles, I’m there for it! Can’t wait to try!!
staysnatched
Tuesday 24th of August 2021
I hope you enjoy it!
Nikita
Tuesday 17th of August 2021
Really tasty & glad I tried it! Simple to make too!
staysnatched
Wednesday 18th of August 2021
I'm so glad you enjoyed it!
Meagan
Tuesday 17th of August 2021
My husband loved this recipe and barely left any for the rest of us! Thank you for making the recipe easy to follow and including rationale for each ingredient it helped this novice cook make a successful meal!
staysnatched
Wednesday 18th of August 2021
Wonderful! I'm so glad to hear it.
Annette Kelley
Saturday 24th of July 2021
Brandi, this recipe is one of my husband's favorites which I thought I would never say. He has been trying diets and giving up after first 10 pounds. He was 370 pounds and now 346. He decided for him to do Keto at Dinner to help me, so I decided to make things I thought he might like.....I take this and put them with Mission low carb Tortillas....talk about good, with a Keto Salsa...and sour cream sometimes even Guacamole. It has become of my favorite dinners. Thank you and my husband thanks you.
staysnatched
Tuesday 3rd of August 2021
You're both welcome!