Heat a large pan on medium-high heat. Add half the oil, swirling the pan to evenly coat the bottom. Then add the portobello slices and cook, stirring occasionally, until theyâ€™re nicely caramelized; about eight minutes. Remove them to a plate.
Heat the remaining oil in the same pan and add the onion and capsicum. SautÃ© until the vegetables have begun to brown; about eight minutes. Return the mushrooms to the pan and stir in the soy and Worcestershire sauce. Cook until the vegetables have absorbed most of the liquid. Season to taste with salt and pepper; remove the pan from the heat.
NUTRITIONAL INFO PER SERVING:
1700 kilojoules, 17 grams protein, 56g carbohydrates, 9g fibre, 16g fat, 880 milligrams sodium.