Garlic Mashed Potato Casserole

Ingredients (10)

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