Why Make This Recipe
Sugar cookie icing is the perfect way to bring color and creativity to your baked treats. This recipe results in a shiny, smooth icing that not only looks beautiful but also tastes great. It’s easy to make and perfect for decorating cookies for any occasion, from holidays to birthdays. Plus, it dries hard, making it ideal for stacking your cookies without smudging the designs.
How to Make Best Sugar Cookie Icing
Ingredients
- 3 cups (360 g) powdered sugar, sifted
- 3–4 Tbsp milk or water
- 2 Tbsp light corn syrup
- 1 tsp vanilla extract (or ½ tsp vanilla + ½ tsp almond extract)
- Pinch of fine sea salt
- Gel food coloring, as desired
Directions
- Sift powdered sugar into a medium bowl.
- Add 3 Tbsp milk or water, corn syrup, vanilla (and any other extract), and a pinch of salt. Stir until smooth.
- Adjust consistency:
- If the icing is too thick, add more liquid ½ tsp at a time.
- If it is too thin, add more powdered sugar.
- For outlining, keep the icing on the thicker side; for flooding, thin it slightly until a ribbon of icing disappears back into the bowl in about 8–12 seconds.
- Divide the icing into bowls and add gel food coloring as desired; stir until evenly colored.
- Transfer icing to piping bags, squeeze bottles, or use small spoons for spreading.
- Decorate completely cooled sugar cookies. Allow icing to dry at room temperature for several hours, or overnight, until the surface is firm.

How to Serve Best Sugar Cookie Icing
Once your cookies are decorated with this shiny icing, they are ready to serve! You can present them on a festive platter or wrap them in clear cellophane bags tied with colorful ribbons for gifting. They are perfect for parties, holidays, or as a sweet treat for family and friends.
How to Store Best Sugar Cookie Icing
If you have leftover icing, you can store it in an airtight container in the refrigerator for up to a week. Make sure to give it a good stir before using it again, and you may need to adjust the consistency with a little milk or powdered sugar.
Tips to Make Best Sugar Cookie Icing
- Make sure to sift the powdered sugar to avoid lumps in your icing.
- For vibrant colors, gel food coloring is the best choice as it won’t change the icing’s consistency.
- If you want to create different shades, divide the icing into smaller bowls before adding color.
- Clean your piping bags or bottles after each use to keep the icing fresh for the next decorating session.
Variation
You can customize your sugar cookie icing by experimenting with different extracts, such as lemon or orange, for a citrus twist. Additionally, try adding edible glitter or sprinkles on top of the icing before it sets for an extra touch of fun!
FAQs
1. Can I use granulated sugar instead of powdered sugar?
No, granulated sugar will not create the smooth texture needed for icing. Always use powdered sugar for the best results.
2. How long does the icing take to dry?
The icing typically takes several hours to dry. If you can, leave it overnight to ensure it hardens completely.
3. Can I make this icing ahead of time?
Yes, you can prepare the icing a few days in advance. Just store it in an airtight container in the refrigerator and stir before using.

Sugar Cookie Icing
Ingredients
Method
- Sift powdered sugar into a medium bowl.
- Add 3 Tbsp milk or water, corn syrup, vanilla (and any other extract), and a pinch of salt. Stir until smooth.
- Adjust consistency: If the icing is too thick, add more liquid ½ tsp at a time. If it is too thin, add more powdered sugar.
- For outlining, keep the icing on the thicker side; for flooding, thin it slightly until a ribbon of icing disappears back into the bowl in about 8–12 seconds.
- Divide the icing into bowls and add gel food coloring as desired; stir until evenly colored.
- Transfer icing to piping bags, squeeze bottles, or use small spoons for spreading.
- Decorate completely cooled sugar cookies.
- Allow icing to dry at room temperature for several hours, or overnight, until the surface is firm.