Place the potatoes in a large pot, and add enough water to cover. Add ¼ teaspoon salt and bring to a boil over high heat. Reduce heat to medium-low, cover loosely and cook for about 20 minutes, or until the potatoes break easily when pierced with a knife. Pour out all of the water, and mash the potatoes in the pot with a potato masher until smooth without any lumps. Add the milk, butter and salt and continue mashing until creamy.
Heat the oil in a large frying pan over medium-high heat and sauté the onions for 5 minutes until wilted. Add the chilli and garlic and sauté for 1 minute. Add in the meat, salt, sweet paprika and pepper and cook for about 10 minutes until done, stirring all the time. Mix in a few drops of Worchester sauce. Pour in the uncle Ben’s sauce and water, bring to a boil and cook covered over low heat for few minutes.
Pour the meat mixture onto your greased pan, spread evenly with mashed potatoes, and cover with cheese.
Preheat oven (200°C-400°F). Bake on second lower rack for about 30 minutes. Remove from oven, let rest for 5 minutes and serve hot with a salad of your choice.