Cheesy Potato Casserole Recipe

Ingredients

• 3 lb russet potatoes, peeled and cut into 1-inch pieces (about 9 small potatoes)
• 1 Tbsp plus 2 tsp kosher salt, divided
• 6 large egg yolks, at room temperature
• 1 cup heavy cream, at room temperature
• 1/4 cup unsalted butter, melted
• 8 oz white Cheddar cheese, shredded (about 2 cups)
• 2 oz Parmesan cheese, grated (about 1/2 cup)
• 1/2 tsp ground white pepper