Cheesy Ranch Scalloped Potatoes

Bahan-bahan (8 porsi)

• 1/2 cup ranch dressing (*)
• 1/2 cup mayonnaise
• 1/2 cup whole milk
• 3 g arlic cloves (minced)
• 2 cups medium cheddar cheese (shredded (8 oz), divided)
• 3 lbs russet potatoes ((5 large potatoes), peeled and thinly sliced less than 1/8" thick)
• 1/4 cup chives (finely chopped, to garnish)