Serves six
Melt butter in heavy saucepan, add garlic and cook briefly until aroma is released. Do not burn!
Add heavy cream, bring to a boil, turn down to simmer and let reduce for about 5 minutes until about 1¾ cups remain. Season well with salt and pepper.
In large bowl, combine sliced potatoes and grated cheese, toss well to combine. Lay this mixture evenly into a 6 inch by 8 inch baking pan that has been coated with vegetable spray. Pour cream evenly over the layered potatoes.
Bake uncovered in a preheated 375°F oven for about 45 minutes to one hour, or until potatoes are tender and there is a deep brown crust on top.
Let rest at room temperature for 5 minutes and serve. The dish can be made in advance and reheated if desired.