3. Arrange the potato slices upright in the greased baking dish, sandwiching them perfectly. Sprinkle each potato with salt and pepper.
4. In a small saucepan, combine the cream, chopped garlic, and thyme leaves. Heat the mixture gently until hot, but not boiling. Pour the warm cream mixture over the potatoes, ensuring it seeps into the slices.
5. Sprinkle the Cheddar cheese evenly over the potatoes, followed by the Parmesan cheese.
6. Cover the dish with foil and bake in the preheated oven.
Bake in the oven for about 40 minutes.
7. After 40 minutes, remove the foil and return the casserole to the oven to bake for another 20 to 25 minutes, or until the top is golden brown and crispy.
8. When done, remove the casserole from the oven and let it rest for a few minutes. Garnish with an additional sprinkling of fresh thyme leaves before serving. Appreciate!
