INGREDIENTS
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2 pounds ribeye or strip loin, trimmed of fat
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4 soft hoagie (sub) rolls
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4-6 oz. button mushrooms, sliced
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1 onion, thinly sliced
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1 green bell pepper, thinly sliced
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2 tablespoons vegetable oil
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1 tablespoon unsalted butter
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1 tablespoon all-purpose flour
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2 cups whole milk, warmed
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1 cup provolone, grated (not sliced)
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salt and pepper, to taste