Creamy Potato-Leek Gratin - Inspired Cooks

Ingredients

• 2 tablespoons plus 2 teaspoons unsalted butter
• 3 medium leeks (about 2 pounds), white and light green parts only, each cut lengthwise in half, then thinly sliced crosswise, rinsed and drained well (about 4 cups)
• 2-1/2 teaspoons salt
• 4 pounds Yukon Gold potatoes (about 9 medium)
• 1 pint (2 cups) heavy whipping cream
• 3 garlic cloves, crushed with press
• 1/4 teaspoon ground white pepper
• 1 pinch ground nutmeg
• 8 ounces Gruyère cheese, shredded (2 cups)