Easy Sugar Cookie Icing

Featured in Sweet Treats Worth the Calories.

This easy-to-use icing brings your sugar cookies to life, making precise outlines and smooth fills simple for stunning designs.
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Updated on Tue, 08 Apr 2025 23:36:55 GMT
Brightly decorated star cookies with pink and green icing, topped with colorful sprinkles on a plate. Pin it
Brightly decorated star cookies with pink and green icing, topped with colorful sprinkles on a plate. | cookwithtaste.com

I've gotta share my top sugar cookie frosting formula that transforms plain cookies into stunning creations. Through many experiments and kitchen trials, I've nailed this silky, shiny topping that looks professional but tastes incredible too. It's now what I reach for during holidays, parties, and any special event.

The Secret Behind Stunning Icing

What makes this formula so great is how adaptable it becomes once you grasp the essentials. I combine a solid foundation of confectioners' sugar, mix in just enough milk for proper texture, add corn syrup for that gorgeous gleam, and finish with vanilla for amazing taste. Your cookies will totally transform in both look and flavor.

Your Required Supplies

  • Powdered Sugar: 4 cups double-sifted for ultimate smoothness.
  • Milk: 5 tablespoons initially; you can tweak later.
  • Corn Syrup: This gives you that showstopping shine.
  • Vanilla Extract: Pick clear for bright white frosting or regular for extra warmth.
  • Food Coloring: Go with gel types—they won't make your icing runny.

Creating The Sweet Charm

Border Creation
Reserve roughly a third of your mixture, keeping it thicker. This creates the edge that contains everything else.
Ideal Filling Consistency
Gradually mix tiny amounts of milk into the remaining portion until it moves like warm honey. A drizzle should vanish back into the bowl within 8-10 seconds.
Creating Colors
Stick with gel colorings—they pack more punch without changing how thick your icing is.
A plate of decorated star-shaped cookies in various pastel colors, topped with sparkling icing and edible decorations. Pin it
A plate of decorated star-shaped cookies in various pastel colors, topped with sparkling icing and edible decorations. | cookwithtaste.com

Decoration Steps

This step is so fun! Get your piping bags ready but don't stuff them—they work better when filled halfway. Begin with your thicker border icing, moving carefully around each cookie edge. After that sets slightly, pour your thinner icing into the middle. It'll spread wonderfully! Keep a toothpick handy to push the icing into every spot.

Add Your Personal Touch

Now's when your imagination can run wild. Want something minty? Drop in a tiny bit of peppermint flavor. Crazy about citrus? Try adding lemon. I've even used almond flavor for wedding treats. And don't forget colors! My children always help mix different tones—just stick with gel colors for the brightest results.

Storing Your Creations

Here's a key tip I found out through trial and error: always allow your beautiful cookies a full day to harden before you stack them. They'll stay good in an airtight box for about seven days—if nobody eats them first! And they freeze amazingly well. I often bake holiday cookies way ahead and just thaw them when guests arrive.

Why You Can't Go Wrong

I can't say enough about this frosting mix. It's totally reliable! Beginners can use it without stress but it still works for fancy designs too. The texture hits that sweet spot—not too loose or stiff. And when it dries, you get this amazing subtle glow that makes every cookie look totally professional.

My Insider Kitchen Tips

After so many cookie decorating rounds, I've learned to add wet stuff slowly—you can always thin icing but making it thicker again is tough. Keep water in a spray bottle nearby to stop drying while you work. And my favorite shortcut? Test your piping patterns on wax paper first—you can just scoop it back into your bowl!

Exciting Variations To Try

I like playing with unique flavors—sometimes I'll put in almond for elegance or lemon zest for brightness. My newest trick? Using a bit of honey instead of corn syrup works amazingly well. For really special times, I love tossing on some edible shimmer dust while everything's wet—it looks absolutely fantastic!

A plate of star-shaped cookies decorated with colorful icing and sprinkles in shades of blue, pink, and white. Pin it
A plate of star-shaped cookies decorated with colorful icing and sprinkles in shades of blue, pink, and white. | cookwithtaste.com

Frequently Asked Questions

→ How can I tell if my icing is the right texture?
Outline icing should settle back after around 3 seconds, while flood icing will level out almost instantly when drizzled.
→ Can I prepare this in advance?
Absolutely! Keep it in a sealed container in the fridge. Let it warm to room temperature and remix, adding milk if it gets too thick.
→ What’s the point of using corn syrup?
It adds extra shine and speeds up the drying process. If you skip it, use milk instead, but your icing won’t be as glossy.
→ How long until the decorated cookies can stack?
Let the cookies dry flat for 24 hours so the icing fully hardens before stacking.
→ Can I switch out milk for water?
Sure! Replace milk with the same amount of water if you’d like. Any kind of milk, including dairy-free, also works great.

Sugar Cookie Icing

Quick-to-make icing that’s usable for both outlining details and flooding cookie surfaces. Perfect for festive treats.

Prep Time
15 Minutes
Cook Time
~
Total Time
15 Minutes
By: Milly

Category: Desserts

Difficulty: Intermediate

Cuisine: Sweet Treats

Yield: 24 Servings (1 3/4 cups icing)

Dietary: Vegetarian, Gluten-Free

Ingredients

01 1 teaspoon clear vanilla flavor
02 Optional: food coloring
03 75-90ml (5–6 tablespoons) milk
04 4 cups (480g) confectioner's sugar
05 4 teaspoons light syrup (like corn syrup)

Instructions

Step 01

Mix sugar, 5 tablespoons milk, syrup, and vanilla till lump-free.

Step 02

Slowly add milk until drizzled icing takes 3-4 seconds to sink in. Save a third for outlining later.

Step 03

Add in a bit more milk to the rest of the icing until it blends back fast when stirred.

Step 04

If you're adding color, mix it into both kinds of icing.

Step 05

Go around the edges of your cookie first, then fill the middle. Use a toothpick to even it out.

Step 06

Keep cookies out to air-dry for 20-24 hours before stacking them up.

Notes

  1. Yields about 1 3/4 cups of icing
  2. You can make it early and chill it in the fridge
  3. The syrup makes it shiny

Tools You'll Need

  • Mixing bowl (large)
  • Bags for piping

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy if milk is used

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 85
  • Total Fat: ~
  • Total Carbohydrate: 22 g
  • Protein: ~