Potatoes + Gruyere = Delicious  Potatoes Au Gratin Recipe Type: Side Cuisine: American Author: Julie Boyle Prep time: 20 mins Cook time: 1 hour Total time: 1 hour 20 mins Serves: 8 Ingredients 6 large white potatoes 2 1/2 cups half and half 1/4 cup sliced scallions 4 cloves of garlic, smashed 4 Tbsp butter