Preheat the oven at 225 degrees Celsius.
Peel and cut the potatoes in pieces. Boil the potatoes in a casserole for approx. 10 minutes.
Peel and cut the onion, garlic and sun-dried tomatoes in small pieces. Fry in a frying pan together with the butter for a few minutes.
Add the vegetarian mincemeat, tomato sauce, salt and pepper and fry for another 5 minutes.
When the potatoes are soft pour away the water and mash the together with the heavy cream.
Pour the mincemeat mixture in an oven form, place evenly the potatoes on top, and sprinkle the grated cheese as a top layer.
Place in the middle of the oven for 15 minutes. Take out and serve warm together with a green salad.