Peanut Butter Cupcakes with Chocolate Fudge Frosting | Tasty Kitchen: A Happy Recipe Community!

Ingredients

• FOR THE CUPCAKES:
• 1 whole Egg White
• 2 Tablespoons White Sugar
• 2 Tablespoons Butter, Melted
• 1 teaspoon Vanilla Extract
• 1 Tablespoon Vanilla Flavored Greek Yogurt
• 2 Tablespoons Creamy Peanut Butter
• ¼ teaspoons (heaping) Baking Powder
• ¼ cups Cake Flour
• 1-½ Tablespoon Milk
• FOR THE FROSTING:
• ½ cups Plus 3 Tablespoons Powdered Sugar, Divided
• ¼ cups Unsalted Butter, Room Temperature
• ¼ teaspoons Vanilla Extract
• 1 pinch Kosher Salt
• 2 teaspoons Dark Cocoa Powder
• 2 ounces, weight Bittersweet Chocolate, Melted