Omnia Oven Philly Cheesesteak Casserole: A Classic Campground Favorite
Introduction
Get ready to enjoy the iconic flavors of a Philly cheesesteak in a hearty, one-pan casserole—all baked to gooey perfection in your portable Omnia stovetop oven. This dish combines juicy steak, sautéed peppers and onions, and a rich, creamy cheese sauce into a comforting meal that’s perfect for feeding a hungry crew at the campsite. The Omnia oven’s gentle, even heat ensures a perfectly baked texture with that irresistible golden, bubbly cheese top, making it feel like a special dinner without the fuss.
What makes this recipe a standout for motorhome chefs is how it transforms a classic sandwich into an easy, no-fuss casserole that travels well . The Omnia oven is a compact Swedish stovetop oven that works on any gas stove, camp stove, or even a grill, making it ideal for RV life . With all the savory, cheesy goodness of a traditional cheesesteak, this is the kind of satisfying, crowd-pleasing meal that makes any campsite feel like home.
Recipe Card
Recipe Summary
Prep Time: 15 mins
Cook Time: 20-25 mins
Total Time: 35-40 mins
Servings: 4
Difficulty: Easy
Ingredients
- 1 lb thinly sliced ribeye or sirloin steak
- 1 large onion, sliced
- 1 green bell pepper, sliced
- 1 cup sliced mushrooms (optional)
- 2 cloves garlic, minced
- 1 tbsp olive oil
- 1/2 tsp salt
- 1/4 tsp black pepper
- 1/2 tsp garlic powder
- 4 oz cream cheese, softened
- 1/2 cup beef broth
- 1 cup shredded provolone cheese
- 1/2 cup shredded mozzarella cheese
- Butter or cooking spray for greasing the pan
- Fresh parsley for garnish (optional)
Instructions
1. Preheat Your Omnia Oven
Place the Omnia oven base on your RV or camp stove over medium heat. Let it heat for a few minutes while you prepare the ingredients. The Omnia’s unique design distributes heat evenly, ensuring your casserole cooks perfectly .
2. Cook the Steak and Vegetables
Heat the olive oil in a large skillet or directly on a griddle surface over medium-high heat. Add the sliced steak and cook for 2-3 minutes until browned . Remove the steak and set it aside. In the same pan, sauté the onion, bell pepper, and mushrooms (if using) for 5-7 minutes until softened and lightly caramelized . Add the minced garlic and cook for another 30 seconds until fragrant. Season the vegetables with salt, pepper, and garlic powder.
3. Make the Creamy Base
In a small bowl, whisk together the softened cream cheese and beef broth until smooth . This creates the creamy, rich sauce that will coat the steak and vegetables.
4. Combine Everything
Return the cooked steak to the pan with the vegetables. Pour the cream cheese mixture over the top and stir until everything is evenly coated in the sauce .
5. Prep the Omnia Pan
Generously grease the Omnia baking pan with butter or cooking spray to prevent sticking. If you have the Omnia silicone liner, place it in the pan for even easier cleanup .
6. Assemble the Casserole
Transfer the steak and vegetable mixture to the prepared Omnia pan and spread it evenly. Sprinkle the provolone and mozzarella cheeses over the top .
7. Bake to Perfection
Place the pan onto the preheated Omnia base and cover with the lid. Bake over low to medium-low heat for 20-25 minutes. Important: The Omnia can be hotter at the bottom than the lid thermometer suggests, so keep the heat moderate to prevent burning. The casserole is ready when the cheese is melted, bubbly, and starting to turn golden.
8. Rest and Serve
Remove the Omnia from the heat and let the casserole rest for 5 minutes . This allows it to set and makes it easier to serve. Garnish with fresh parsley if desired. Serve warm and enjoy!
Tips for Perfect Omnia Oven Philly Cheesesteak Casserole
Temperature Control on Your Camp Stove
The Omnia oven can run hotter at the bottom compared to the top, so it’s often better to cook at a lower temperature for a longer time to prevent burning. Start with medium heat to get the oven up to temperature, then reduce to low or medium-low to maintain a steady bake .
Using the Omnia Silicone Liner
Using the Omnia silicone liner makes cleanup incredibly easy and prevents sticking. If you don’t have the liner, simply grease the Omnia baking pan generously with butter or cooking spray .
Choosing the Right Steak
Ribeye is the classic choice for its marbling and flavor, but sirloin works well too. For easier slicing, partially freeze the steak for 20-30 minutes before cutting it into thin strips . A well-seasoned, thinly sliced steak is the heart of any great Philly cheesesteak.
Customizing Your Casserole
This recipe is incredibly versatile. Use ground beef instead of sliced steak for a more budget-friendly version . You can also swap provolone for cheddar, mozzarella, or Cheez Whiz for a more authentic taste .
Variations to Try
Chicken Philly Cheesesteak Casserole
Swap the beef for thinly sliced chicken breasts. The dish will be lighter but just as flavorful, and it’s a great way to use up leftover chicken .
Low-Carb Philly Cheesesteak Casserole
Skip the pasta and serve this casserole over cauliflower rice or zucchini noodles. It’s a great low-carb option that doesn’t skimp on flavor .
Spicy Philly Cheesesteak Casserole
Add ½ teaspoon of red pepper flakes or a dash of hot sauce to the creamy sauce. Top with pepper jack cheese for an extra kick.
Philly Cheesesteak Pasta Bake
Stir in 2 cups of cooked pasta (like penne or egg noodles) before baking for a more substantial casserole . The pasta will soak up all the delicious flavors.
Mushroom Lover’s Philly Cheesesteak
Double the mushrooms and add a few extra varieties like cremini or portobello for an earthy, umami-rich twist .
Storage Instructions
Storing Leftovers
Place leftover casserole in an airtight container and refrigerate within 2 hours. It will stay fresh in your camper fridge for up to 4 days . The flavors often meld and taste even better the next day.
Reheating Without Drying Out
The best way to reheat is back in the Omnia oven over low heat for 10-15 minutes until warmed through. You can also reheat individual portions in a skillet over medium heat with a splash of broth to keep it moist .
Freezing for Future Trips
This casserole freezes well for up to 2 months. Place it in a freezer-safe container and thaw in your RV refrigerator overnight before reheating in the Omnia oven .
Frequently Asked Questions
Can I make this Philly cheesesteak casserole on a charcoal grill?
Absolutely! Place the Omnia oven base on the grill grate over indirect medium heat. The smoky flavor from the charcoal adds an incredible depth to the dish that’s impossible to replicate indoors. Just monitor the heat carefully to avoid burning the bottom.
What if I don’t have the Omnia silicone liner?
No problem! Simply grease the Omnia baking pan generously with butter or cooking spray before adding the casserole mixture. You can also use parchment paper cut to fit the pan as a disposable liner.
How do I know when the casserole is perfectly cooked?
The casserole is ready when the cheese is melted, bubbly, and lightly golden on top. If the top is browning too fast, reduce the heat and bake a little longer. The edges should be hot and bubbling.
Can I use ground beef instead of sliced steak?
Yes! Ground beef is a great budget-friendly alternative. Cook it in the skillet until browned, then proceed with the rest of the recipe . The flavor will be slightly different but just as delicious.
What should I serve with this casserole?
This casserole is a complete meal on its own! For a full campsite spread, serve with a simple green salad, crusty garlic bread, or toasted hoagie rolls for a true Philly-style experience .
