Parmesan Smashed Potatoes - Once Upon a Chef

Ingredients

• 2 pounds baby red potatoes, sliced in half (they should all be about the same size so they cook evenly)
• 6 tablespoons unsalted butter, cut into tablespoons
• ½ cup grated Parmigiano-Reggiano
• ¾ teaspoon salt
• ½ teaspoon ground black pepper
• 1 teaspoon fresh chives, finely chopped (optional)