Heart-Shaped Pancakes with Chocolate Recipe

Ingredients

• 2 tablespoons butter, melted
• 1 large egg, separated
• 1.75 cups all-purpose flour
• 1 teaspoon baking powder
• 1 tablespoon white sugar
• 0.75 cup buttermilk
• 2 tablespoons buttermilk, or more as needed
• 1 teaspoon butter
• 1 (4 ounce) bar milk chocolate, coarsely chopped
• 1 tablespoon confectioners' sugar, or to taste