Best Sugar Cookie Icing Recipe That Hardens

Why You’ll Love This Recipe

I appreciate how this icing combines simplicity with versatility. The smooth texture makes it ideal for intricate designs, and it hardens just right—not too crunchy, but firm enough to handle. Whether I’m preparing for a holiday gathering or just indulging in some creative baking, this icing never disappoints.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

• 2 cups powdered sugar

• ¼ cup corn syrup

• 1–2 tablespoons milk or water

• 1 teaspoon vanilla extract (or other flavoring)

• Gel food coloring (optional)

Directions

1. In a bowl, I combine 2 cups of powdered sugar with ¼ cup of corn syrup.

2. I stir in 1–2 tablespoons of milk or water until the icing reaches my desired consistency.

3. I add 1 teaspoon of vanilla extract or my preferred flavoring.

4. If I’m using colors, I divide the icing into separate bowls and mix in gel food coloring as desired.

5. Using a piping bag or a spoon, I apply the icing to my cookies and let them set at room temperature.

Servings and Timing

This recipe yields enough icing to decorate approximately 24 medium-sized sugar cookies. The preparation time is about 10 minutes, and the icing sets in roughly 30 minutes at room temperature.

Variations

• Dairy-Free: I substitute almond milk or water for regular milk to make the icing dairy-free.

• Flavored Icing: I experiment with different extracts like almond, lemon, or peppermint to add unique flavors.

• Royal Icing Alternative: For a firmer texture, I add a tablespoon of meringue powder to the icing.

Storage/Reheating

I store any leftover icing in an airtight container in the refrigerator for up to one week. Before using it again, I stir it well to restore the consistency. If I need to store it longer, I freeze the icing for up to three months, then thaw it in the refrigerator and mix before using. Decorated cookies can be stored in an airtight container at room temperature for up to five days.

FAQs

Can I use this icing on other types of cookies?

Yes, I often use this icing on various cookies like gingerbread or shortbread. It adheres well and adds a delightful sweetness.

How can I adjust the consistency for detailed piping?

If I need a thicker consistency for detailed piping, I add more powdered sugar. For a thinner glaze, I incorporate a bit more milk or water until I reach the desired texture.

Does this icing hold up in humid conditions?

In my experience, this icing sets well in most conditions, but in high humidity, I ensure the cookies are stored in a cool, dry place to maintain the firmness.

Can I make this icing ahead of time?

Absolutely. I prepare the icing in advance and store it in the refrigerator. Before using, I let it come to room temperature and stir it to restore the smoothness.

Is it safe to use with young children?

Yes, since this icing doesn’t contain raw eggs, it’s safe for children to use and enjoy during decorating sessions.

Conclusion

This sugar cookie icing has become a staple in my baking routine. Its ease of preparation and reliable results make it perfect for both everyday treats and special occasions. Whether I’m crafting intricate designs or simply adding a touch of sweetness, this icing delivers every time.