Philly Cheesesteak Stuffed Peppers are the perfect low carb gluten free dinner with juicy steak, provolone cheese, peppers, mushrooms, and spices. It's a great way to enjoy a philly cheesesteak without worrying about the bread!
Preheat oven to 375F. Grease a medium baking dish and set aside.
In a large sauté pan, add olive oil, onion, and mushrooms. Cook until onions are translucent, about 5 minutes. Add steak slices and cook until about half way done.
Place bell peppers in baking dish, open-side-up. Put 1 slice of provolone in each pepper. Scoop steak mixture evenly into each pepper. Top each pepper with remaining provolone.
Bake for 20-25 minutes, or until peppers are soft and a fork goes through them easily.