Creamy Potato Bake !!!

1 1/2 kg brushed potatoes peeled and thinly sliced
3 cloves garlic thinly sliced
1 tbsp fresh thyme leaves
1 cup milk
300 ml thin cream
30 g butter melted
2 tbsp finely grated parmesan
2 onions halved, thinly sliced
Preheat oven to 180 °C or 160 °C fan. Lightly grease a 7-cup ovenproof dish. Layer 1/3 of potatoes over base. Top with half the onion, garlic and thyme. Season with salt and pepper. Pour over 1/3 of combined milk and cream.
Repeat layers. Finish with remaining potato and pour remaining milk and cream over. Brush a sheet of foil with oil and place oil-side down over the potato. Seal tightly. Bake for 45 mins. Uncover and brush top with melted butter. Cook a further 45 mins until tender and golden brown. Sprinkle with parmesan for last 15 mins of cooking