I make single serve gratin potatoes in silicone muffin pans. Its great for small volumes Put thin sliced yukon golds over a few small bits of garlic on the bottom of the cup. really fit the slices in tightly by cutting them in half and overlapping, salting as you go. When the cup is full pour heavy cream in until it is just up t o the last slice. Bake at 350 for about 20 minutes in a convection oven, test for doneness of course. Let it rest for 10 minutes so it sets-up and then serve. Pretty fool proof.