Peel and slice the potatoes thinly using a food processor or a mandolin and put the slices to soak in water.

Grate the cheese and peel and finely chop the garlic and parsley.

Place the pan over a medium heat and add the bacon lardons.

Cook for about 5 minutes, stirring occasionally then add the garlic for a minute.

Turn off the heat and transfer the bacon to a small bowl.

Add the oil and butter to the pan over a medium heat and add the potatoes.

Sprinkle with the salt and pepper and stir well.

Place the lid on and turn the heat to medium low for 15 - 20 minutes until the potatoes are cooked through.

Add the bacon and cheese and stir the mixture together.

Use a spoon or spatula to tidy the edges to form a giant pancake.

Preheat the grill to medium and grill the truffade for a few minutes.

Scatter with chopped parsley and serve in slices like a pizza.