Step 1

Preheat oven to 375˚F with the rack in the center of your oven. You'll need a buttered 9x13 casserole dish.

Step 2

In a large mixing bowl, stir together ranch, mayonnaise, milk, minced garlic and 1 cup cheddar cheese. Add thinly sliced potatoes and stir until every slice is coated in the creamy sauce.

Step 3

Spread the potatoes evenly into the casserole dish, patting them evenly into the dish, then sprinkle on remaining 1 cup cheddar cheese.

Step 4

Cover tightly with foil and bake at 375˚F for 65-75 minutes or until tender when pierced with a knife. then remove foil and bake an additional 5 minutes. Broil on high heat for about 2-3 minutes at the end to lightly brown the cheese crust. Rest for 10-15 minutes then garnish with chives to serve.