No-Fail Homemade Royal Icing for Sugar Cookies
The best no-fail, homemade, 3 ingredient royal icing recipe for decorating sugar cookies. Use for gingerbread cookies and houses!
Why You’ll Love This Royal Icing Recipe
I love making homemade sugar cookies and decorating them all fancy and personalized for my kids’ various events (I’m definitely an overachiever in that way!). Royal icing is my go-to because it’s easy to work with, holds its shape beautifully, and dries smooth and firm — making those decorated cookies look as good as they taste.
I’ve put together a full tutorial covering everything you need to know about royal icing, from what it’s used for and how to work with it, to how it compares to other frostings. This recipe is reliable, simple to make, and perfect for decorating holiday cookies, party treats, and special-occasion desserts that need clean lines and a polished finish.
What Is Royal Icing (And Why It’s Used for Cookies)
I’ve received a lot of questions related to“what is royal icing”, and “why is it used for sugar cookies?” So before I get started showing the step-by-step tutorial, I feel it’s best to explain a little bit about royal icing and when you would use it.
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Royal icing is really easy to make but can definitely be intimidating when you are not sure how the process goes. So let’s make this no fail, 3 ingredient royal icing recipe together!
Royal icing is a versatile icing made from egg whites (or meringue powder), powdered sugar, and occasionally added flavorings. It is commonly used for sugar cookies because it can be colored, it dries to a smooth, yet hard-like finish, making it ideal for decorating and creating intricate designs on cookies.
Cookies I Use Royal Icing On
SUGAR COOKIES: I use my mom’s sugar cookie recipe which is my most favorite! Roll out thinner and bake at 400 degrees for crispier sugar cookies or roll thicker and bake at 350 degrees for more soft and fluffy sugar cookies!
GINGERBREAD COOKIES: I use my grandma’s recipe. This recipe also makes perfect gingerbread houses because it’s firm.
Ingredients You’ll Need
- egg whites
- confectioners sugar (powdered sugar)
- cream of tartar or vanilla extract
- food coloring (optional)
Royal Icing Tools & Supplies
Royal Icing Consistencies
Depending on how you’re decorating, royal icing can be mixed to different consistencies for outlining, flooding, or detailed piping. It’s helpful to know which consistency you want for your cookies before you start. My recipe can easily be adjusted to achieve each of these finishes.
- Outline Consistency – is what I use to pipe clean borders around cookies and designs. The icing should be thick enough to hold its shape without spreading, but still easy to pipe. When you lift the piping tip, the line should stay put on the cookie instead of sinking or flattening out.
- Flood Consistency – is a little thinner than outline icing and is used to fill in the centers of your cookies after outlining. It should flow smoothly and settle into an even surface, but not be so thin that it runs over the edges. A good test is to drizzle a bit back into the bowl — it should blend back in within about 8–10 seconds.
- Toothpaste Consistency – is thicker and is usually where I start before thinning the icing for outlining or flooding. It should be smooth, thick, and hold its shape when stirred. This consistency also works well for writing, small details, and designs that need to hold their shape.
How to Make Royal Icing
Step 1: Prepare the Icing Base
Separate egg whites from yolks. Discard egg yolks and put egg whites in a mixing bowl. Measure out 3 ounces (typically around 3 eggs)
Mix the egg whites using a hand held mixer fitted with a whisk attachment until they are light and fluffy. Depending on your mixer’s speed and the temperature of the egg whites, this process may take several minutes.
Step 2: Add Stabilizer & Flavor
Add 1/2 tsp cream of tartar to stabilize the eggs and add 1/2 tsp vanilla extract for flavor (use clear, imitation vanilla extract if you need a bright white royal icing color).
Stephanie’s Family Consumer Science Tip
Stabilizing & Flavoring Royal Icing: Cream of tartar helps stabilize the proteins in egg whites (or meringue powder), allowing the icing to whip more smoothly and hold its structure as it dries. This results in royal icing that spreads evenly, pipes cleanly, and hardens with a consistent finish.Vanilla extract is added for flavor, but it also affects appearance. Traditional vanilla extract can tint royal icing slightly off-white, while clear imitation vanilla keeps the icing bright white. Choosing between the two depends on whether color or flavor is your top priority for decorated cookies.
Step 3: Mix Until Stiff Peaks Form
Slowly add in 4 cups of powdered sugar into the egg whites, about ½ cup at a time, mixing well after each addition so it incorporates smoothly and doesn’t make a big mess!
Mix the royal icing until it reaches a thick, toothpaste-like consistency. This is always where I start. From here, it’s easy to adjust the icing depending on how you plan to decorate — whether you need outline consistency, flood consistency, or want to keep it thicker for detailed piping and writing.
If the icing feels too thin or runny, add a little more powdered sugar, about 1 tablespoon at a time, mixing well after each addition. If it’s too thick, add 1–2 drops of water and mix again. The key is to make small adjustments and mix thoroughly between each one until the icing looks and feels just right.
Step 4: Add food coloring to color the royal icing
If you’re making colored royal icing, this is the time to add your food coloring. Start with just a few drops — a little goes a long way — and mix thoroughly before adding more. Continue adding color in small amounts until you reach the shade you want.
Gel or liquid food coloring blends easily into royal icing, turning bright white icing into beautifully tinted colors that are perfect for decorating cookies.
Using a hand-held mixer, blend the food coloring into the royal icing until evenly combined.
Step 5: Transfer to Piping Bags
Spoon the royal icing into piping bags (I prefer reusable Wilton piping bags).Fit the bag with your decorating tip of choice, then pipe around the outline of each cookie and fill in the center.
Have fun getting creative!!
Decorating with royal icing can be super fun! The creative possibilities are endless! I have a whole Pinterest board with sugar cookie decorating ideas! Come follow along for great inspiration!
How to Store Royal Icing
Because royal icing is exposed to air while you’re working with it, it naturally starts to dry out. Once you’ve reached the consistency you want, it’s important to cover the icing right away. Doing this saves you time in the long run because you won’t have to constantly work to bring the icing back to the right consistency. I store royal icing in an airtight container, or I leave it in piping bags and place the bags inside an airtight container — that’s what works best for me.
If I’m not able to use the icing within an hour or so of making it, I place it in the refrigerator to slow down the drying process. It’s also important to consider the temperature of the room you’re baking in. In a warmer room, royal icing will soften and become more liquidy faster, while in a cooler room, the icing will firm up and thicken more quickly. Keeping these factors in mind makes decorating much smoother and less frustrating.
Frequently Asked Questions
Can I substitute cream of tartar with vanilla extract in royal icing?
Not really. Cream of tartar and vanilla extract serve different purposes in royal icing. Cream of tartar helps stabilize the egg whites, allowing the icing to whip smoothly and hold its structure as it dries. Vanilla extract, on the other hand, is added for flavor and does not provide the same stabilizing effect.
If you skip the cream of tartar, your royal icing will still work, but it may be slightly less stable. Vanilla can be added in addition to cream of tartar for flavor, or used on its own if flavor is your main concern — just keep in mind that regular vanilla may tint the icing off-white, while clear vanilla keeps it bright white.
What is the perfect consistency for sugar cookie royal icing?
To achieve the right consistency for royal icing, you’ll want it to be similar to toothpaste. Add powdered sugar gradually while mixing until you reach the desired consistency. If it’s too thick, add a bit of water; if it’s too thin, add more powdered sugar.
How long does it take for royal icing to dry on sugar cookies?
The drying time for royal icing can vary depending on humidity and thickness it was piped on the cookie. Generally, it takes about 4 to 6 hours for royal icing to dry to the touch. For completely firm icing, allow it to dry overnight or for 12-24 hours. I always recommend making the cookies one day ahead of time and storing them in the refrigerator to ensure that the cookies are set and ready for your event.
Baseball cookies for my little man’s birthday!!
Recipe Card
Royal Icing Recipe
Equipment
- 4 cup Pyrex measuring cup
- Hand held Mixer with whisk
- Piping bag and tips
Ingredients
- 3 oz egg whites
- 1/2 tsp vanilla extract can use clear vanilla extract if desired
- 4 c powdered sugar
Instructions
- Separate egg whites from yolks. Place egg whites into a mixing bowl
- Mix eggs until fluffy and airy
- Add in vanilla extract
- Mix in powdered sugar
- Mix until icing reaching a consistency of toothpaste *don't over mix
Nutrition
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Stephanie—home cook, DIY addict, seasonal decor fanatic, and proud chicken wrangler living in a Victorian house that’s always a project. Whether I’m cooking with garden-fresh ingredients, herding mischievous chickens, or tackling another DIY, I’m here to share the fun (and chaos).
Didn’t taste very good, using vanilla. I also must have over mixed because it was very thick!
Can you use this icing on a coconut cake?
I don’t see why not! This icing recipe is really good on just about everything!!
Royal icing isn’t meant for cakes, just cookies.
is it gonna be harden? or i have to put it in to freezers first?
It shouldn’t get hard-hard. It is the consistency of toothpaste essentially while you are piping it on the cookie, and then it will firm up. Definitely wouldn’t put it in the freezer to harden it. If it’s too runny, slowly add more powdered sugar.
https://gatheredinthekitchen.com/moms-classic-sugar-cookie-recipe/
Hi! I’m confused…I added half the amount of powdered sugar, and it looks like marshmallow! What did I do?
Hi Allison, no worries. Did you use the egg whites? Sometimes eggs can run on the smaller side and the icing comes out a tad too thick.. what you can do to fix this is add a little water. Add a drop at a time and mix. Happy piping!
question: can I use my egg beater egg whites purchased at gocery store? Also can I spread on the cookies with a knife or do you have to pipe it?
Hi Charlene, I’m really not sure about using egg beater whites, I’ve never used those before. You could give it a try though!
Royal icing works great piping…but yes, you can use a knife to spread it. It won’t give the same look, but if that’s not of importance, than yes.
Can I prepare this ahead of time, like a day ahead?
Hi Pat – you can….but make sure that it is in a VERY tight air-tight container. You may need to add a few drops of water to the icing the next day if it has hardened some. Happy baking!
Is it safe to eat perishable egg whites? Is that the same as pasturized? Do not want to make anyone sick. I found your recipe as i do not want to run to the store for corn syrup, thanks!
If the egg whites are not from pasteurized eggs, it is best to use meringue powder or liquid eggs whites you can buy from the store.
How come you’re not cooking the egg whites? That’s not safe. I use meringue powder, which is egg whites.
In response to your first comment about royal icing is only for cookies… wrong! It is most definitely for cakes too and in fact was originally done for cakes first. Royal icing was used to coat wedding cakes served at celebrations hosted by the British royal family, hence the name, “royal icing”, which was graced Queen Victoria’s wedding cake. In response to your second comment about cooking egg whites, etc. meringue power has more than just egg whites; egg whites must be used from pasteurized eggs, if one chooses to use them fresh, otherwise liquid egg whites can be purchased at the store(also uncooked, but pasteurized).
thanks for the info!
I saw in a previous comment that this icing can be made ahead of time and stored in a tight sealed container. Does it need to be refrigerated also?
Yes, I would recommend refrigerating it.