Buttermilk Pancake Muffins

Bahan-bahan (8 porsi)

• 1 & 1/2 cups flour (spooned and leveled)
• 1 & 1/2 tablespoons baking powder
• 1/2 teaspoon kosher salt
• 3 tablespoons butter (melted)
• 3/4 cup buttermilk
• 1/4 teaspoon maple extract
• 1 & 1/2 tablespoons maple syrup
• 1 egg (separated)
• 1 cup blueberries (fresh* plus more to top muffins)
• buttermilk (to brush tops)
• 1 tablespoon butter (to brush on baked muffins)
• maple syrup (to garnish)