Perfect Sugar Cookie Icing

Featured in Sweet bites of pure joy.

This all-in-one icing creates both firm outlines and liquid flood designs, giving your sugar cookies a polished, professional look.
alicia in the kitchen
Updated on Fri, 02 May 2025 17:40:30 GMT
Star cookies with pink and green icing, decorated with bright star-shaped sprinkles on a plate. Pin it
Star cookies with pink and green icing, decorated with bright star-shaped sprinkles on a plate. | tasteofsavor.com

I've gotta share my top sugar cookie icing formula that turns plain cookies into stunning treats. After trying batch after batch in my home kitchen, I've nailed this glossy topping that looks fancy but tastes even better. It's become what I always use for holidays, parties, and any time we're celebrating.

The Secret to Stunning Icing

What makes this formula so great is how adjustable it is once you get the basics down. I combine a solid amount of powdered sugar, mix in milk until it feels right, add corn syrup for that gorgeous shine, and finish with vanilla for amazing taste. Your cookies will transform right before your eyes.

Your Ingredient List

  • Powdered Sugar: 4 cups double-sifted for ultra-smooth results.
  • Milk: 5 tablespoons initially; add more if needed.
  • Corn Syrup: This is what gives you that showstopping shine.
  • Vanilla Extract: Go with clear for pure white icing or regular for warmer tones.
  • Food Coloring: Stick with gels since they won't water down your mixture.

Creating Your Masterpiece

Border Preparation
Keep about a third of your icing thicker. This creates the wall that contains everything else.
Getting Flood Consistency
Slowly add milk to the remaining icing until it runs like warm honey. The drizzle test should show it melting back in around 8-10 seconds.
Making Colors Pop
Stick with gel colorings as they pack more punch without thinning your mixture.
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. | tasteofsavor.com

Decorating Fun Begins

This step is my favorite! Get your piping bags ready but don't stuff them too full—they work better when filled halfway. Draw your outlines first, moving carefully around each cookie edge. After they set slightly, pour your thinner icing into the middle areas. It's amazing how it spreads! Grab a toothpick to push the icing all the way to the borders.

Put Your Stamp On It

Now's when you can really show off your style. Want something minty? Toss in a tiny bit of peppermint flavor. Love tangy treats? Try some lemon. I've even made batches with almond extract for wedding treats. And don't forget colors! My children always jump in to help mix shades—just remember gel colors give you the brightest look.

Storing Your Creations

I learned this important trick through mistakes: always let your fancy cookies dry completely for 24 hours before you stack them up. They'll stay good in an airtight box for about seven days—if folks don't eat them all first! They also freeze wonderfully. I often bake holiday treats weeks early and just pull them out when needed.

Reliability You Can Count On

Let me tell you why this icing never disappoints: it works for total beginners but also handles complex designs. It's got that perfect middle ground—not too liquid, not too firm. And it dries with this subtle glow that makes homemade cookies look store-bought fancy.

Tricks From My Kitchen

After tons of decorating sessions, I've picked up some wisdom: always drip liquids in slowly—you can easily thin icing but making it thicker is tough. Keep water in a spray bottle nearby so nothing dries while you work. And my number one tip? Test your piping skills on wax paper first—you can just scoop it back into your bowl!

Creative Twists To Try

I love playing with different tastes—maybe almond for fancy flair or lemon for a bright kick. My newest trick? Swapping honey for corn syrup works amazingly well. For really special events, I sprinkle some edible sparkles on wet icing—it looks 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. | tasteofsavor.com

Frequently Asked Questions

→ How can I tell if the icing has the right texture?
For outlines, it should hold a shape for 3-4 seconds before blending. For floods, it smoothens out immediately when poured.
→ Is it okay to prepare the icing early?
Sure, just put it in a sealed container in the fridge. Let it warm up and stir before use. Add a little milk if it’s too thick.
→ Why is corn syrup included?
It gives a beautiful shine to the icing and makes it set faster. You can skip it and replace it with extra milk, though the shine won’t be the same.
→ When is it safe to stack decorated cookies?
Leave the cookies to dry fully for 20-24 hours in a single layer. This makes sure the icing hardens completely.
→ Can I replace milk with water?
Absolutely, swap milk with an equal amount of water if needed. You can also use dairy-free options like almond milk.

Sugar Cookie Icing

An easy icing mix for both thick outlines and smooth flood consistency, great for decorating cookies for holidays or celebrations.

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

Category: Desserts

Difficulty: Intermediate

Cuisine: Baking

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

Dietary: Vegetarian, Gluten-Free

Ingredients

01 1 teaspoon clear vanilla extract
02 4 teaspoons light corn syrup
03 Food coloring, optional
04 5-6 tablespoons (75-90ml) milk
05 4 cups (480g) powdered sugar

Instructions

Step 01

Leave the cookies to sit for 20-24 hours before stacking them up

Step 02

Start with piping the edges, then fill the middle. Use a toothpick to close any empty spots

Step 03

Mix a bit more milk into the left-over icing until it quickly blends when stirred

Step 04

Slowly pour in milk until the icing takes about 3-4 seconds to settle back down. Save one-third for outlining

Step 05

If you’d like, mix food coloring into both icings

Step 06

Stir together the powdered sugar, 5 tablespoons milk, vanilla, and corn syrup until smooth and combined

Notes

  1. Makes about 1 3/4 cups of icing
  2. You can make it ahead of time and chill it
  3. The corn syrup adds a glossy finish

Tools You'll Need

  • Large mixing bowl
  • Piping bags

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • 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: ~