Classic French Madeleines - Light and Airy Shell Cookies - My Homemade Recipe

Ingredients

• 1 cup (120g) cake flour.
• 1/2 teaspoon baking powder.
• 1/4 teaspoon salt.
• 2 large eggs, room temperature.
• 1 large egg yolk, room temperature.
• 1/2 cup (100g) granulated sugar.
• 1 tablespoon vanilla extract.
• 1 tablespoon lemon zest.
• 1/2 cup (115g) unsalted butter, melted and cooled.
• Powdered sugar for dusting (optional).