Sugar-Free Royal Icing Recipe

Easy to make Sugar-Free Royal Icing Recipe.

Who doesn’t love cookies and even better, who doesn’t love to decorate cookies? This is a fun activity, especially for kids. Kids with diabetes miss out on some of these great activities but they don’t have to. Our easy-to-make sugar-free royal icing recipe puts the fin back in cookie decorating for diabetics.

There are only 4 ingredients on our easy-to-make sugar-free royal icing recipe. Since one of the ingredients is water, there are just three ingredients that you would want to add to your diabetic-friendly pantry.

Our sugar-free royal icing can be used on our easy-to-make sugar-free shortbread cookies, substitute lemon juice for the water in the recipe and drizzle it over our Sugar-Free Lemon Squares, or drizzle some white royal icing over our Sugar-Free Chocolate Brownies for a decorative classic look.

sugar-free royal icing recipe
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Kitchen supplies needed to make our Sugar-Free Royal Icing recipe

Shopping list to make our Sugar-Free Royal Icing recipe

What is meringue powder?

Meringue powder is dried egg whites mixed with starches, that are used to stabilize icings and frostings. The benefit of the meringue powder is that there are no concerns about eating raw egg whites. It is not recommended to use meringue powder in baking recipes, but it is perfect for icings.

Meringue powder can be stored at room temperature. there is no need to refrigerate it as it is a dehydrated product.

What about other sweeteners instead of Splenda?

You will see a lot of other types of sweeteners in the supermarket. Sweetener is just a category of foods that are used to sweeten recipes, and all types of sugars fall into that category. Always check labels to make sure it is diabetic-friendly before buying.

To get the lowest carbs in any recipe, I recommend 0 carb sweeteners. For example, Truvia confectioners sugar replacement is made with Stevia extract. The problem is that it contains sugar alcohols (Erythritol) and that means carbs. Erythritol has 0 calories and 8 grams of carb per tablespoon, but so does regular icing (confectioners) sugar. Even though it may be a choice for other diets, it doesn’t benefit a diabetic when it comes to blood sugar control. Why pay double the price when there is no real benefit to a diabetic’s blood sugar control?

When looking for substitutes always check the nutrition facts and compare them with other sweeteners. Especially if this is being served to a diabetic.

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How to properly colour your sugar-free royal icing.

When making sugar-free royal icing, the consistency of the icing is important, especially if you will be using it for piping. Adding liquid colouring will change the consistency of the icing, making it more watery.

For our sugar-free royal icing sugar recipe, you should only use gel or paste colouring, not liquid drops. Powder food colouring is also available, but many brands contain sugar and they can also dry out your icing.

Using gel or paste colouring is easy and a little goes a long way. I use a clean toothpick and dip it into the gel or paste and then add it to the icing. It is easy to get your desired colour using this method.

If you are using liquid drops, make sure you add them before you have added all of the water, so that it replaces some of the liquid in the recipe. this will help prevent it from becoming too liquidy.

Make Lemon Drizzle with this recipe

When making our Sugar-Free Royal Icing recipe, substitute the water with lemon juice and add extra until you have the desired consistency. . Drizzle over your favourite dessert or cookie.

How to make Sugar-Free Sprinkles with our Sugar-Free Royal Icing recipe

What is cookie decorating without sprinkles? Did you know that you can easily make your own sugar-free sprinkles? This is awesome. make whatever colours you want. Use this sugar-free Royal Icing recipe and makes a bunch in different colours and store for later or use as soon as they are hard.

Steps to make Sugar-Free Sprinkles.

This is a great way to use up leftover sugar-free icing. You just never know when you might wat a few sprinkles to top off a dessert.

1 – Make our Sugar-Free Royal Icing recipe.

2- Colour as instructed above.

3- Assemble your piping bag with a fine round tip and coupler.

4- Fill your piping bag with our sugar-free royal icing. if you made a double or triple recipe, only fill the bag approximately 2/3 full.

5- Twist the bag closed at the top and squeeze gently, to burp the bag. This removes air from the icing before you start piping.

6- Pipe straight lines onto the wax paper-lined tray. They don’t have to be perfectly straight, just reasonably straight will make it easier to cut them. Don’t worry if you get dots or broken lines. they will be cut into small pieces (when they are completely dry) and you will never know the difference

7- Continue until you have used up the icing, or made the desired amount.

8- Let dry for at least 10 hours, but preferably overnight.

9- Once the icing lines are completely dry, chop them into small sprinkle-sized pieces. (a large kitchen knife is the easiest to use.

10- Store in an airtight container.

A note about storing sprinkles – If the sprinkles have not been allowed to completely dry, allow some ventilation into the container as they will crumble apart, from the moisture.

Sugar-Free Shortbread Cookie recipe - iced

Sugar-Free Shortbread Cookie Recipe

Making Icing for flooding.

If you wish to add flooding icing to your cookies, it is simple and quick. Add extra water, until you reach the desired consistency. Only add a couple of drops at a time. It doesn’t take much water to thin it out to flooding consistency.

Easy to make Sugar-Free Royal Icing Recipe

Prepare the Splenda

Pulse the sweetener in a food processor for a few seconds to make it a little finer. Add the cornstarch and pulse again. This will give the sweetener a more confectioners sugar-like consistency. This makes the finished icing a little bit smoother and easier for piping.

sugar-free royal icing recipe

Sugar-Free Royal Icing Recipe

A perfect diabetic-friendly decorator icing that is easy to make and sugar-free,
Prep Time 15 mins
Course Dessert
Cuisine American


  • 1 cup Splenda.sweetener
  • 1 tsp cornstarch
  • 1 tsp powdered meringue
  • 2 tbsp warm water


  • Pulse the sweetener and cornstarch together in a food processor prior to starting.
  • Combine the sweetener mix and meringue powder in a small mixing bowl.
  • Add one tbsp of warm water and mix with an electric mixer.
  • Add the remaining tbsp of water as needed, until you reach the desired consistency.
  • Use with a piping bag or spread with an offset cake spatula.
Keyword diabetic icing, diabetic royal icing, sugar-free icing, sugar-free royal icing.
sugar-free royal icing recipe

Nutritional value for Sugar-Free Royal Icing

This recipe uses Splenda which has no carbs, and meringue which has 10 calories and 2 grams of carbs per teaspoon. and cornstarch that has 10 calories and 2.4 grams of carbs per teaspoon.

This entire recipe will have 20 calories and 4.4 carbs. Pretty awesome!

Divide the total by the number of servings that you use to calculate the values you need.

We hope that you enjoy our Sugar-Free Royal Icing recipe and have fun decorating cookies for yourself or others!

Thank You for visiting The Naked Diabetic.

This post contains affiliate links. As an affiliate, I earn a small commission from qualifying purchases (at no charge to you).