Sift the powdered sugar into a medium bowl. Add the whole milk and the vanilla and use a whisk to mix until smooth without any lumps.
Use immediately over desserts or cover and store glaze in the refrigerator for up to 3 days. If storing, whisk before using, adding more liquid as needed to achieve the desired consistency.
Notes
Storage: Store leftover glaze in an airtight container in the refrigerator for up to 4 days. You can also freeze it for up to one month and thaw at room temperature when needed. Stir well before using. Tips: Sift the powdered sugar. To prevent lumps in your glaze, it's important that you sift it first using a fine-mesh sieve.Mix until smooth. Mix well with a whisk when combining the ingredients until you achieve a completely smooth and lump-free consistency. Be sure to get the edges of the bowl.Adjust the consistency. Depending on your use of the glaze, you may want it thicker or thinner. If the glaze is too thick, add another splash of milk until you reach your desired consistency. For a thicker glaze, add more powdered sugar. Always start low and adjust as needed.Glaze while warm. For the best results, glaze your baked goods while they are still slightly warm. The glaze will stick better and set nicely on the surface.