- Heat olive oil in a large frying pan over medium-high heat. Cook brown onion and red capsicum, stirring, for 5 minutes or until softened. Add Mexican Seasoning. Cook, stirring, for 30 seconds. Add red kidney beans, Tomato and water. Cook, stirring, for 1-2 minutes. Preheat grill on high. Spoon the bean mixture over baked potatoes. Top with avocado, chopped tomato and shredded cheddar. Cook under grill for 2-3 minutes. Season with pepper. Top with coriander. Serve with chilli sauce.