Slow-Cooker Loaded Mashed Potatoes | America's Test Kitchen

Ingredients

• 5 pounds russet potatoes , peeled and sliced 1/4 inch thick
• 2 3/4 cups boiling water , plus extra as needed
• 3 garlic cloves , peeled and smashed
• Salt and pepper
• 12 tablespoons unsalted butter , melted
• 6 slices bacon , chopped
• 8 ounces cheddar cheese , shredded (2 cups)
• 1/2 cup sour cream
• 3 scallions , sliced thin