Heres mine.. its quick and easy.. and i think tastes just as good if not better than the long cooked oven one.

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Potatos cut into 3cm pieces
60g Butter
20ml Oil
1 Small Onion
60g Bacon cut 5cm pieces
3/4 cup Tasty Chesse

Cook potatos until tender, drain. Add butter, allow to melt. Place aside.
Preheat grill to moderately hot (180 degrees)
Heat fry pan add oil, fry onion till soft (1 minute), add bacon - cook until crisp.
Combine with potato.
Add 1/2 cheese. Stir Carefully not to break potato too much.
Poor into baking dish.
Sprinkle cheese & place under grill till crispy and brown.

If you wanna add more or different types of cheeses too go for gold!