Ingredients (Serves 4–6)
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1 lb thinly sliced beef (ribeye, sirloin, or deli-style roast beef)
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1 tbsp olive oil
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1 medium onion, thinly sliced
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1 green bell pepper, thinly sliced
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1 red bell pepper, thinly sliced
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2 cloves garlic, minced
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1 tsp Worcestershire sauce
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Salt and black pepper, to taste
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2 cups shredded provolone or mozzarella cheese
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1 cup shredded cheddar cheese
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1 can (10.5 oz) cream of mushroom soup (optional, for extra creaminess)
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1 package (8 oz) hoagie rolls or sandwich buns, cut into cubes (or sub with cooked pasta/rice for a lower-carb option)
Instructions
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Preheat oven:
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350°F (175°C).
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Grease a 9×13-inch baking dish.
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Cook beef and veggies:
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Heat olive oil in a skillet over medium-high heat.
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Add onions and bell peppers, sauté 5–6 minutes until softened.
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Add garlic and cook 1 minute.
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Add beef and Worcestershire sauce, season with salt and pepper. Cook until beef is browned and cooked through.
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Assemble casserole:
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Layer cubed rolls (or pasta/rice) in the greased baking dish.
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Spread beef and vegetable mixture evenly over the top.
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Mix cream of mushroom soup (if using) with half of the cheese and pour over the beef mixture.
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Sprinkle remaining cheese evenly on top.
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Bake:
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Bake uncovered 20–25 minutes, until cheese is melted and bubbly.
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Serve:
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Let cool 5 minutes before serving.
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Optional: garnish with sliced green onions or parsley.
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💡 Tips:
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Use leftover roast beef or steak for a quick version.
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For extra cheesiness, mix different cheeses like provolone, mozzarella, and American.
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Add mushrooms for a classic Philly twist.
I can also give a low-carb version that uses cauliflower rice or thinly sliced zucchini instead of bread for a lighter casserole. Do you want that version?