Philly Cheesesteak Casserole
A comforting and easy-to-make casserole that captures all the flavors of a traditional Philly cheesesteak without the fuss of sandwiches.
I’ve been making this take on Philly cheesesteak for weeknight dinners for years — it’s all the melty, savory comfort of a sandwich but baked into a simple, family-friendly casserole. It comes together fast, feeds a crowd, and cleans up easily, which is why it’s on repeat at my house. If you want a lighter spin, try this low-carb Philly cheesesteak casserole for an even quicker, slimming swap.
Why you’ll love this dish
This casserole gives you everything good about a Philly cheesesteak without juggling sandwiches. It’s:
- Fast: Most of the work is a quick sautée; then the oven finishes things.
- Crowd-pleasing: Melty cheese, tender steak, and sweet peppers please picky eaters and adults alike.
- Flexible: Easy to adapt to low-carb, keto, or vegetarian diets.
- Economical: Uses simple ingredients and stretches a pound of steak into several servings.
The cooking process explained
Quick overview so you know what’s coming: sautée the vegetables until tender, brown thin-sliced steak with simple seasonings, transfer everything to a baking dish, pour on heavy cream, top with shredded provolone or mozzarella, and bake until bubbly and golden. Expect about 10–15 minutes of stove time and 20–25 minutes in the oven.
What you’ll need
- 1 lb steak, thinly sliced (ribeye, top round, or sirloin work well)
- 2 cups bell peppers, sliced (use a mix of colors for sweetness and color)
- 1 cup onion, sliced (yellow or sweet onion recommended)
- 2 cups mushrooms, sliced (cremini or white button)
- 2 cups shredded cheese (provolone or mozzarella; smoked provolone adds depth)
- 1 cup heavy cream (can substitute half-and-half for a lighter finish, but bake time may vary)
- 1 tablespoon garlic powder (or 2 cloves fresh garlic, minced)
- Salt and pepper to taste
- 1 tablespoon olive oil (substitute avocado oil or butter if preferred)
Notes: If your steak isn’t pre-sliced, freeze it for 20–30 minutes to make thin slicing easier. For dairy-free versions, use a high-fat coconut cream and dairy-free cheese (results will vary).
Step-by-step instructions
- Preheat your oven to 350°F (175°C).
- Heat the olive oil in a large skillet over medium heat. Add the sliced onions, bell peppers, and mushrooms. Cook, stirring occasionally, until softened and slightly caramelized — about 6–8 minutes.
- Push the vegetables to the side of the skillet, add the thinly sliced steak, sprinkle on the garlic powder, and season with salt and pepper. Cook the steak, stirring, until browned but still tender — about 3–5 minutes. Avoid overcooking; the oven will finish it.
- Transfer the steak-and-veg mixture into a greased baking dish, spreading it evenly. Pour the heavy cream over the top so it seeps through the mixture.
- Evenly sprinkle the shredded cheese over the casserole.
- Bake in the preheated oven for 20–25 minutes, until the cheese is bubbly and starting to turn golden. For a bronzed top, finish for 1–2 minutes under the broiler — watch closely to avoid burning.
- Let the casserole rest for 5 minutes before serving so the cream sets slightly.
Philly Cheesesteak Casserole
- Prep
- 15 MIN
- Cook
- 25 MIN
- Total
- 40 MIN
- Serves
- 6
01Ingredients
Vegetables
Main Ingredients
02Method
- Preparation
- Baking
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0 OF 11 DONE03Recipe notes
- 01Pairs well with a simple green salad or roasted potatoes. For a lighter meal, enjoy with steamed green beans or an arugula salad dressed with lemon and olive oil. Store leftovers in an airtight container for up to 3–4 days.
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Best ways to enjoy it
- Serve scooped onto plates with a simple green salad or roasted potatoes.
- Spoon it into toasted hoagie rolls for a sandwich-style meal.
- For a lighter plate, pair with steamed green beans or a crisp arugula salad dressed with lemon and olive oil.
- Beverage pairings: a cold alcohol-free beer or a soft, fruity black cherry soda complements the richness; iced tea or sparkling water with lemon is also refreshing.
Storage and reheating tips
Refrigerate: Store leftovers in an airtight container for up to 3–4 days.
Reheat: Warm single portions in the microwave for 1–2 minutes, or reheat in a 350°F oven for 10–12 minutes until heated through. Cover with foil to prevent drying.
Freeze: Cool completely, then freeze in a sealed container for up to 2 months. Thaw overnight in the refrigerator before reheating.
Food safety: Don’t leave the casserole at room temperature for more than 2 hours. Reheat to at least 165°F (74°C) before serving.
Creative twists
- Vegetarian: Replace steak with thickly sliced seitan, extra mushrooms, or firm tofu and add a splash of soy sauce for umami.
- Low-carb/keto friendly: Swap the cream for a combination of cream cheese and heavy cream, or turn the filling into keto Philly cheesesteak rolls for a handheld option.
- Spicy: Add diced jalapeño or a pinch of red pepper flakes when sautéeing peppers.
- Mediterranean spin: Swap provolone for halloumi or feta and add roasted red peppers and olives.
FAQ
How long does this take from start to finish?
A: Plan on about 35–45 minutes total: 10–15 minutes to cook the veggies and steak and 20–25 minutes in the oven.
Can I use frozen vegetables?
A: Yes, but thaw and drain them first to avoid excess moisture. Pat dry before sautéeing to encourage caramelization.
What cut of steak is best?
A: Ribeye gives the richest flavor, sirloin is leaner and budget-friendly, and top round works well if sliced very thin against the grain.
Can I make this ahead of time?
A: Prepare through Step 4, cover, and refrigerate. When ready to serve, add cheese and bake for the same time (you may need an extra 5–10 minutes if cold).
Can I replace heavy cream?
A: Half-and-half or a mix of milk and cream can be used, but the casserole may be less rich. For a dairy-free option, try full-fat coconut milk — flavor will change.
Conclusion
If you want another home-baked variation with helpful tips and photos, see Wholesome Yum’s Philly Cheesesteak Casserole for a similar approach and low-carb ideas. For a different spin, try my Easy Philly Cheesesteak Casserole.
Breakfast
Casseroles
Casseroles
