INGREDIENTS
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2 tbsp. vegetable oil
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1 large yellow onion, sliced into half moons
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2 bell peppers, thinly sliced
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kosher salt
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Freshly ground black pepper
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2 lb. sirloin steak
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1 tsp. oregano
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12 slices provolone
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1 large shallow loaf of bread, sliced in half
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1 tbsp. Parsley