Preheat your oven to 350°F (175°C) and grease a donut pan.
In a bowl, combine the flour, sugar, baking powder, and salt.
In another bowl, mix the vanilla, buttermilk, egg, and melted butter.
Combine the wet and dry ingredients until just mixed.
Fill the donut pan with the batter and bake for about 10-12 minutes until golden.
Let the donuts cool.
For the glaze, mix powdered sugar, milk, and pink food coloring until smooth.
Dip the tops of the donuts in the glaze and let them set.