INGREDIENTS
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1 small yellow onion, julienned
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1 red bell pepper, julienned
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1 green bell pepper, julienned
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1 tablespoon butter
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4 links raw spicy Italian sausage, skin sliced lengthwise and sausage removed from casings in 1 piece
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6 slices provolone cheese, preferably smoked
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2 (8-inch) hoagie rolls
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Salt and freshly ground black pepper
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1 cup marinara sauce