Prepare by greasing baking dish with butter and preheat oven to 350°F/180°C.
Peel the potatoes and slice them 1/8" x 3 mm thick or as thin as you can possibly go. Or use a slicer for convenience!
Soak potato slices in water to prevent oxidation or turning brown.
Heat saucepan over medium heat then pour in the heavy cream, garlic, butter, salt, and pepper. Let cook until butter melts. Remove from heat and set aside.
Drain water from the potatoes and take your prepared greased baking dish.
Pour a small amount of the cream mixture, just enough to cover the bottom of the dish. Spread some of the potatoes in a baking dish to make a first layer. Then pour over some of the cream mixture again then repeat the process until you finish all potato slices and cream mixture.
Sprinkle cheese on top of the potatoes and spread evenly. Cover with aluminum foil and bake for 1 hour and 30 minutes. NOTE:At 1 hour and 15 minutes, check the potatoes if tender and remove foil. turn on fan/broil setting of oven to give the top a golden brown crust.
Remove from oven and serve as a side or on it's own! Bon Appetit!