Step 1
Place cream, creamed sweetcorn, butter and garlic in a jug or bowl. Mix until combined and set aside. Make sure the cheese is prepared and set aside 250 ml of the grated cheese.
Step 2
Preheat oven to 180°C / 350°F. Place ⅓ of the potato slices in a greased baking dish in a single layer. Season with salt, black pepper, and about ⅓ of the thyme leaves. Pour about ⅓ of the cream mixture over the layer of potatoes and spread evenly. Add about ⅓ of the remaining 500 ml of grated cheese. Repeat the whole process twice for the second and third layer, but do not add any cheese on the top layer.
Step 3
Cover baking dish with lid or foil and bake for about an hour or until the potatoes in the middle are soft.
Step 4
Remove foil or lid, top with the reserved 250 ml grated cheese (or more), and continue baking for another 10 to 15 minutes until golden. Let it rest for about 5 minutes before serving.
