Twice Baked Potatoes

Bahan-bahan (12 porsi)

• 6 small russet potatoes (or baking potatoes)
• ⅓ cup sour cream
• ¼ cup salted butter
• ½ teaspoon garlic powder
• ½ teaspoon salt (or to taste)
• ¼ teaspoon black pepper (or to taste)
• ½ cup warm milk (or buttermilk, if needed)
• 6 slices bacon (cooked and crumbled, or 3 tablespoons bacon bits, additional for serving (optional))
• 1 tablespoon chopped fresh chives (or green onions, additional for serving)
• 1 ½ cups shredded sharp cheddar cheese (divided)