Mini Powdered Sugar Donut Muffins

INGREDIENTS

1/3 cup

unsalted butter, softened to room temperature

1/2 cup

granulated sugar

large egg

1 tsp

vanilla extract

1/2 cup

milk (cow's milk, soy milk, almond, or rice are fine)

and 1/2 cups white whole wheat flour (or all-purpose flour) (measured correctly)

and 1/2 teaspoon baking powder

1/2 tsp

ground cinnamon

1/2 tsp

salt

3 tbsp

unsalted butter

3/4 cup

powdered sugar