Preheat your oven to 180 degrees and lightly grease a 20cm square baking dish.
Slice the onion and bacon into small pieces and place them into a frying pan over a medium heat and cook for 3 -4 minutes or until the bacon begins to brown. Set aside until needed.
Peel the potatoes and finely slice - I find easiest to do this is with a mandolin so that you get nice even slices
Place the cream, salt and pepper and nutmeg into a small jug and stir to combine.
Arrange half of the potatoes across the bottom of the baking dish, add half of the sliced bacon and onions along with half of the grated tasty cheese. Pour around ⅓ of the cream mixture over the potato pieces.
Repeat the above and top your Scalloped Potatoes with a little extra cheese if you like.
Cover the baking dish with foil and placing it into the preheated oven for 1 hour to cook.
Remove the foil and bake for a further 30 minutes or until the top of the potato bake has browned and the potatoes have cooked through when tested with a skewer.
Carefully remove the Scalloped Potatoes from the oven and serve.