A cozy, cheesy casserole inspired by the classic Philly cheesesteak sandwich, featuring a crispy provolone crust and a savory beef and vegetable filling. Perfect for quick weeknight dinners or casual gatherings.
Do not skip the provolone crust as it crisps and browns to add a satisfying crunch. Caramelize onions slowly for best flavor. If the crust browns too fast, tent with foil after 20 minutes. For a low-carb version, replace flour with almond or coconut flour and reduce liquid slightly. Ground beef can be used instead of sliced steak. Reheat leftovers in the oven to maintain crust crispiness. This recipe can be made dairy-free by substituting milk and cheese with plant-based alternatives, though crust texture will differ.
Keywords: Philly cheesesteak casserole, provolone crust, easy dinner, comfort food, cheesy casserole, weeknight meal