
This Cheesy Keto Philly Cheesesteak Casserole is everything you want from a Philly cheesesteak sandwich but without all the carbs! Thinly shaved rib eye with sauteed onions and peppers, topped with melted provolone cheese layered and baked. An easy and healthy low carb weeknight dinner everyone will love!
Heat avocado oil in a cast-iron skillet on medium-high. (I used a 10 1/2" skillet.)
Season the steak with salt and pepper.
Sear the steak in two batches. (If you overcrowd the skillet you won’t get a good sear on the steak). When the steak is browned, remove from the skillet and set aside.
Add 1 tbsp butter to the same skillet along with peppers, onions, garlic, and mushrooms. Sauté until the veggies are softened.
Next add your beef broth, Braggs Aminos, Worcestershire sauce, and salt/pepper and cover with a lid. Simmer for 4 minutes.
Add steak back to the pan and cook on medium for two minutes.
Add provolone cheese on top of the casserole covering as much as possible. (See step-by-step images above.)
Place the skillet in the oven on broil for 1-3 minutes or until the provolone cheese begins to brown and bubble. Watch carefully as it can burn very quickly!