Scrub potatoes, cut potatoes in half. Take melon ball maker scoop out centre and place ball of potato into a bowl. Steam potatoes for 30 minutes. Beat in butter, sour cream, salt and pepper. In another pan, fried onion and minced meat and ball of potatoes until tender and add mix vege, salt and pepper to taste and combined with the butter and sour cream mixture. Using small tablespoon, scoop the mixture and put on top of the potatoes. Add shredded cheese then sprinkle with paprika. Bake in a 200° C oven for about 25 minutes or until cooked through and tender until cheese is melted and potatoes are heated through.