Best Homemade Pancakes

Bahan-bahan (4 porsi)

• 2 cups all-purpose flour, (spooned into measuring cup and leveled off)
• 4 teaspoons baking powder
• ¼ cup sugar
• 1 teaspoon salt
• 2 large eggs
• 1½ cups milk, (plus more if necessary)
• 4 tablespoons unsalted butter, (melted and slightly cooled, plus more for cooking)
• Vegetable oil, (for cooking)