INGREDIENTS
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1 tbsp coconut oil or olive oil
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2 portobello mushrooms (6" diameter), prepped (see "Prep School") and sliced
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1 medium yellow onion, sliced
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1 red bell pepper, seeded and sliced
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1 tbsp low-sodium soy sauce
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1 tbsp worcestershire sauce
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Salt and pepper
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4 slices provolone cheese
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4 whole-wheat hoagie rolls