Microwave potatoes at full power (100 percent) for 8 minutes or until fork-tender, turning at least once.
Meanwhile, sauté onion, pepper and sausage in oil in nonstick skillet until onion is softened and mixture is heated through, 5 minutes.
Split the top of the potatoes open. Spoon the sausage mixture over the top of each. Makes 2 servings.