Combine powdered sugar and 2 Tablespoons of milk and whisk together.
Add additional milk, a splash at a time, until glaze is smooth and the glaze falls in a smooth ribbon from the whisk.
For a thicker/sturdier glaze or one that you would like to drizzle in lines that hold their shape, the ribbon that falls from the whisk should hold its shape for several seconds before dissolving back into the bowl. For a thinner glaze it should dissolve into the bowl within one second.
Whisk in vanilla extract.
Use to drizzle over muffins, scones, coffee cakes, etc.
