"Get this all-star, easy-to-follow Philly Cheesesteak Garbage Bread recipe from Food Network Kitchen..."
INGREDIENTS
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5 tablespoons olive oil
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1 pound beef flank steak
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Kosher salt and freshly ground black pepper
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One 8-ounce container button mushrooms, thinly sliced
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2 medium yellow onions, thinly sliced
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2 medium Cuban or banana peppers, seeded and thinly sliced
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All-purpose flour, for dusting
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1 1/2 pounds store-bought pizza dough (see Cook's Note)
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2 cups grated American cheese (6 ounces)
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2 cups grated provolone (6 ounces)
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1 large egg, beaten, for egg wash