3-4 pounds sirloin steak, about 1 inch thick (strip steaks are originally called for in the recipe but were way too expensive when I shopped so use whatever is the best buy)
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1 tablespoon sauté spice (equal parts black pepper, salt, and garlic powder)
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2 tablespoons olive oil
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1 onion, sliced thin
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1 red bell pepper, seeded and sliced thin
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8 ounces white mushrooms, sliced thin
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2 tablespoons steak sauce (I used A-1)
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1/2 teaspoon dried oregano
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4-6 (6 inch) sub rolls, slit partially open lengthwise