01 -
Warm your oven to 400°F. Butter your ceramic dish. Cut potatoes super thin, about 1/16 inch thick.
02 -
Warm butter with chopped garlic. Sprinkle in flour to thicken. Let it cook briefly for a minute or two. Pour cream in slowly, stirring until it thickens up.
03 -
Mix in your Parmesan, thyme, salt and pepper till it's all blended nicely. Turn off the heat.
04 -
In a big bowl, mix your potato slices with the sauce. Stand them upright in your dish. Pour any leftover sauce on top.
05 -
Cover with some foil, cook for 30 minutes. Take foil off, then cook another 30 minutes till they look golden and feel tender.
06 -
Wait about 10 minutes before you dig in.