Garlic Mashed Potato Casserole

Details

Ingredients

• 3 pounds Yukon Gold potatoes, or more as needed
• ½ cup hot milk
• ½ cup cream cheese, softened
• ½ cup chopped green onions, divided
• 1 egg, lightly beaten
• 3 tablespoons butter
• 3 cloves garlic, crushed and chopped, or to taste
• ½ teaspoon salt
• ½ cup shredded Cheddar cheese