Step 1

Peel and slice the potatoes in 2mm or 1/10th of an inch in thickness. You can use a knife or a mandolin to achieve this.

Step 2

Fit the potatoes vertically in a 22x18cm / 8.5x7in. When the mould is full, place more slices of potato in places where you see empty spaces. It needs to be super tight.

Step 3

Sprinkle the potatoes with the salt and pepper.

Step 4

Mix the olive oil and butter in a small bowl. Use a brush to paint it on the potatoes.

Step 5

Spread the cheese on top of the potatoes.

Step 6

Bake the potatoes in a preheated oven at 200°C / 390°C for 45min or until it's really crispy on top and soft underneath. To make sure they're cooked through, poke them with a pointed knife.

Step 7

Finish it off with fresh thyme leaves.