Philly Cheesesteak Casserole with Bell Peppers

🕒 Prep: 15 min
🔥 Cook: 30 min
🍽 Serves: 6
★★★★★
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Welcome to a hearty twist on a classic favorite! This Philly Cheesesteak Casserole with Bell Peppers combines all the flavors you love from the iconic sandwich into a comforting, cheesy bake that's perfect for family dinners or casual get-togethers.

Philly Cheesesteak Casserole with Bell Peppers

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Ingredients for Philly Cheesesteak Casserole with Bell Peppers

Ingredients for Philly Cheesesteak Casserole with Bell Peppers

Ground beef is the heart of this dish, providing a savory, meaty base that holds the casserole together. Onion and garlic add depth and aromatic richness, while green and red bell peppers contribute sweetness and vibrant color. The savory punch from Worcestershire sauce and the earthy warmth of dried oregano balance the flavors beautifully. Provolone cheese melts smoothly, offering a creamy texture, while mozzarella cheese brings that irresistible, stretchy cheese pull. A splash of beef broth keeps everything moist, and French bread cubes absorb the savory juices, becoming soft yet slightly crispy on top.

Why This Philly Cheesesteak Casserole with Bell Peppers Works

As the onion and garlic cook in the oil, they soften and lose their sharp bite. The pan is hot enough that the ground beef browns instead of steaming, so it firms up a bit on the outside but stays juicy inside. Seasonings and Worcestershire sauce spread through the beef while it’s still hot, so the meat soaks them up. When the bell peppers go in, they start out crisp but relax and bend as they cook, so they’re tender but not mushy.

Once the beef and peppers go over the French bread cubes, the bread acts like a sponge. Beef broth and meat juices sink into the bread, so the bottom of the casserole turns soft and almost custardy instead of dry. In the oven, the provolone and mozzarella melt down into all the gaps between the bread and beef. As the cheese bubbles and then cools slightly, it firms up just enough to hold everything in place, so each scoop has bread, meat, peppers, and stretchy cheese all stuck together.

Philly Cheesesteak Casserole with Bell Peppers Tips & Tricks

  • Use day-old French bread; it holds up better against the moisture.
  • For a spicier kick, add a pinch of red pepper flakes.
  • Letting the casserole rest for a few minutes after baking helps the layers set.

Mistakes To Avoid

Letting the ground beef stay in big chunks instead of breaking it up in the pan leaves large, dense pieces that don’t soak into the bread layer. In the oven, those heavy clumps sit on top and the bread underneath stays dry and separate instead of turning into a soft, soaked base.

Adding the bell peppers too early and cooking them until they’re limp causes them to leak a lot of liquid into the pan. That extra moisture soaks the bread in the dish and can turn the bottom into a soggy, mushy layer instead of a soft but still bouncy texture.

Skipping the step of sautéing the onion and garlic until the onion is translucent means they go into the casserole still firm and sharp. In the short oven time, the onion pieces stay a bit crunchy and the garlic can taste harsh, so the bites don’t blend smoothly with the soft beef and bread.

Using very soft or very tiny bread cubes makes the base collapse once the hot beef mixture goes on. The bread then compresses into a dense, wet layer instead of holding small pockets that trap the juices and melted cheese.

Equipment Used:

Oven, Skillet, Casserole Dish

Ingredients

  1. 1.5 lbs ground beef
  2. 1 large onion, diced
  3. 1 green bell pepper, sliced
  4. 1 red bell pepper, sliced
  5. 8 oz provolone cheese, sliced
  6. 2 cups shredded mozzarella cheese
  7. 1 tbsp Worcestershire sauce
  8. 2 cloves garlic, minced
  9. 2 tbsp olive oil
  10. 1 tsp salt
  11. 1/2 tsp black pepper
  12. 1/2 tsp dried oregano
  13. 1/4 cup beef broth
  14. 1 loaf French bread, cubed

Step-by-step Instructions

  1. 1. Preheat your oven to 375°F (190°C).
  2. 2. In a large skillet over medium heat, add olive oil and sauté onion and garlic until the onion is translucent.
  3. 3. Add ground beef to the skillet, breaking it apart with a spatula. Cook until browned.
  4. 4. Stir in Worcestershire sauce, salt, black pepper, and oregano.
  5. 5. Add sliced bell peppers and cook until they soften, about 5 minutes.
  6. 6. Pour beef broth into the skillet and mix well.
  7. 7. In a greased casserole dish, layer the French bread cubes evenly.
  8. 8. Pour the beef and pepper mixture over the bread cubes.
  9. 9. Top with slices of provolone cheese, followed by shredded mozzarella.
  10. 10. Bake in the preheated oven for 20-25 minutes until cheese is melted and bubbly.
  11. 11. Allow to cool slightly before serving.

Frequently Asked Questions

Can I use a different type of cheese?
Absolutely! Feel free to substitute with your favorite cheese like cheddar or Swiss for a different flavor profile.
How do I store leftovers?
Store in an airtight container in the fridge for up to 3 days. Reheat in the oven for best results.
Can I make this casserole ahead of time?
Yes, you can assemble it a day in advance and keep it in the fridge. Just bake it when you're ready to serve.

Serving Ideas for Philly Cheesesteak Casserole with Bell Peppers

This casserole is a meal in itself, but it pairs wonderfully with a crisp green salad or roasted vegetables for some extra greenery. A side of tangy pickles can also complement the rich flavors of the cheesesteak.

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This recipe is for informational purposes only. Always follow proper food safety practices, cook foods to safe internal temperatures, and store leftovers appropriately. Results may vary.