Lemon Meringue Cupcakes

Ingredients

• 3 egg yolks (reserve whites for meringue)
• 3/4 cup granulated white sugar
• 3 tbsp. all-purpose flour
• pinch of salt
• 3 tbsp. lemon juice
• 2 tbsp. lemon zest, loosely packed
• 1/2 cup water
• 2 tbsp. unsalted butter, melted
• 1/2 cup unsalted butter
• 1 cup sugar
• 2 eggs
• 2 tsp. baking powder
• 1 tsp. salt
• 1-1/2 cups all-purpose flour
• 3 egg whites
• 1/4 cup sugar