Tasty Sugar Cookie Icing

Featured in: Desserts

This handy icing makes both stiff border icing and runny fill icing, so you can decorate your sugar cookies like a pro without any fuss.
Twistytaste.com
Updated on Thu, 10 Apr 2025 14:59:38 GMT
A plate of star-shaped cookies decorated with pink and green icing, sprinkled with colorful star-shaped decorations. Pin it
A plate of star-shaped cookies decorated with pink and green icing, sprinkled with colorful star-shaped decorations. | twistytaste.com

I've gotta share my top sugar cookie icing formula that transforms plain cookies into stunning little masterpieces. Through many test batches in my home kitchen, I've nailed down this sleek, glossy topping that looks fancy but tastes wonderful too. It's now what I grab for any celebration, whether it's Christmas, someone's special day, or just because.

The Secret To Stunning Icing

What makes this so great is how adaptable it becomes once you get the hang of it. My approach uses a solid foundation of confectioners' sugar, just the right amount of milk for proper texture, some corn syrup for that gorgeous gleam, and vanilla to make it taste amazing. Your cookies will totally transform both in looks and flavor.

Your Shopping List

  • Powdered Sugar: 4 cups double-sifted for ultimate smoothness.
  • Milk: 5 tablespoons initially; you'll tweak as you go.
  • Corn Syrup: This gives you that bakery-quality shine.
  • Vanilla Extract: Pick clear for bright white icing; traditional adds richer notes.
  • Food Coloring: Go with gel types—they don't water down your mixture.

Creating The Wonder

Border Creation
Reserve roughly a third of your mixture at a thicker consistency. This creates the dam that keeps everything neatly contained.
Dreamy Fill Icing
Gradually mix tiny amounts of milk into the remainder until it runs like warm honey. Test by drizzling—it should vanish back into the bowl within 8-10 seconds.
Mixing Shades
Stick with gel colorants—they're stronger and won't mess up your carefully crafted texture.
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. | twistytaste.com

Decorating Fun

This is the best part for sure! Load your piping bags halfway—they're much easier to handle when not stuffed full. Begin with the thicker border icing, working carefully around each cookie edge. After that sets slightly, pour the runnier icing inside. It's almost magical how it spreads! Keep a toothpick handy to guide the icing into tight spots.

Add Your Personal Touch

Now's when you can really express yourself. Fancy some mint? Just add a tiny hint of peppermint flavor. Into citrus? Try some lemon essence. I've even used almond flavor for cookies at weddings. And don't forget color possibilities! My children always jump in to help mix different tones—just stick with gel colors for the most vibrant results.

Storing Your Masterpieces

One super important tip I learned through trial and error: always let those gorgeous cookies dry completely for 24 hours before you stack them. They'll stay tasty in an airtight container for up to a week—assuming they don't get gobbled up first! Plus, they freeze wonderfully. I often prep holiday treats weeks ahead and just thaw them when company comes.

Why You'll Love This Approach

The reason I can't get enough of this icing is its reliability! It works for total beginners but still lets experts create detailed designs. The texture hits that sweet spot—flowing enough but not runny. And when it dries, you get this subtle glow that makes homemade cookies look totally professional.

Insider Tips From My Kitchen

After tons of decorating sessions, I've learned a few tricks: always go slow when adding milk—you can thin icing way easier than fixing it when too runny. Keep water in a small spray bottle nearby to fight crusty edges while working. And my favorite shortcut? Test your piping skills on wax paper first—you can just scoop up mistakes and reuse that icing!

Creative Twists To Try

I love playing with different flavors sometimes—maybe a dash of almond for fancy cookies or some lemon zest for brightness. My newest trick? Swapping in a bit of honey instead of corn syrup works amazingly well. For really special cookies, I sprinkle some edible shimmer dust while everything's still wet—the results look absolutely dreamy!

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. | twistytaste.com

Frequently Asked Questions

→ How can I tell if my icing's consistency is right?
Outline icing should stay visible for 3-4 seconds when drizzled before sinking in. Flood icing will quickly disappear into itself when you pour it back.
→ Is it okay to prepare this beforehand?
Sure, just keep it in a sealed container in your fridge. Warm it up to room temp and stir it again before using, adding a bit of milk if it's too thick.
→ What's the point of adding corn syrup?
Corn syrup gives your icing a nice shine and helps it harden quicker. You can leave it out and use milk instead, but your cookies won't look as glossy.
→ When can I pile my cookies together?
Keep your decorated cookies flat for 20-24 hours until they're completely dry. Then they're ready to stack without smudging.
→ Will water work instead of milk?
Definitely. Just swap in the same amount of water for milk. Any milk type works fine too, even plant-based options like almond milk.

Cookie Icing Sugar

An easy-to-make icing that works for both outlines and filling when decorating sugar cookies. Great for Christmas treats and birthday celebrations.

Prep Time
15 Minutes
Cook Time
~
Total Time
15 Minutes

Category: Desserts

Difficulty: Intermediate

Cuisine: Baking

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

Dietary: Vegetarian, Gluten-Free

Ingredients

01 480g (4 cups) confectioners' sugar
02 75-90ml (5-6 tbsp) milk
03 4 tsp clear corn syrup
04 1 tsp pure vanilla extract (clear)
05 Optional: food coloring

Instructions

Step 01

Combine confectioners' sugar, 5 tbsp milk, corn syrup and vanilla, whisking until completely blended

Step 02

Slowly blend in milk until the mixture hangs for 3-4 seconds when drizzled. Set aside 1/3 for outlining

Step 03

For the leftover mixture, stir in extra milk until it quickly dissolves when dripped back into the bowl

Step 04

Mix food coloring into both batches if you want colored icing

Step 05

Draw the borders first, then fill the centers. Spread with a toothpick to reach corners

Step 06

Let your cookies sit undisturbed for 20-24 hours before you stack them

Notes

  1. Yields about 1 3/4 cups total
  2. You can store this in the fridge for later use
  3. The corn syrup helps create a glossy finish

Tools You'll Need

  • Icing bags
  • Spacious mixing bowl

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • contains dairy if using regular milk

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: ~