Garlic Smashed Potatoes

Bahan-bahan (12 porsi)

• 4 pounds golden, Dutch, or red potatoes, scrubbed and chopped into 2-inch pieces
• 1/2 cup butter, plus 2 tablespoons more for serving
• 1/3 - 2/3 cup milk, half and half, or cream *
• 1 teaspoon kosher salt, adjust to taste
• 1/2 teaspoon garlic powder, adjust to taste
• 1/2 teaspoon freshly ground black pepper, adjust to taste