Very Vanilla Cupcakes

INGREDIENTS

and 2/3 cup (210g) all-purpose flour (spoon & leveled)

1/2 tsp

baking powder

1/4 tsp

baking soda

1/2 tsp

salt

1 cup

granulated sugar

1/2 cup

unsalted butter, melted and slightly cooled

large egg whites

1/4 cup

vanilla greek yogurt (or plain; or regular yogurt; or even sour cream)

3/4 cup

vanilla almond milk (or cow's milk; or soy milk; or plain almond milk)

2 tsp

pure vanilla extract

seeds scraped from 1/2 split vanilla bean1

1 cup

unsalted butter, softened to room temperature

4 cups

(480-600g) confectioners' sugar

1/4 cup

heavy cream2

1 tsp

vanilla extract

seeds scraped from 1/2 split vanilla bean1

salt,