Easy Royal Icing Recipe for Cookies
This is how to make royal icing for cookie decorating. This flooding icing, which is also called royal icing, is known for its smooth finish that sits beautifully on sugar cookies and holds color really well. This is the best icing to use for cookie decorating, outlining shapes and filling in designs. The consistency can be adjusted from thicker icing for piping details to a thinner flow for smooth cookie tops.

You might be wondering about what is the best icing to use for cookie flooding and holiday baking. This is such an easy recipe with only three ingredients. Just egg whites, powdered sugar and vanilla. It is one of the most simple recipes that is so easy to whip up. Another thing I love about this royal icing recipe is that you can use small piping tips to write words with it or make shapes for cupcakes. This is one of the best royal icing recipes I have used, it’s my absolute favorite.
Best Royal Icing For Cookies
Why you will love this recipe
You will love this royal icing for flooding cookies because it sets hard so decorated cookies stay neat and easy to stack or package. It does not use meringue, which keeps the ingredient list simple. The icing dries with a smooth finish that holds shape and color well on sugar cookies.

Ingredients For Royal Icing
- 2 egg whites
- 2 2/3 cups confectioners sugar
- 1 tsp vanilla extract

How To Make Royal Icing For Cookie Flooding
Step 1
Separate the egg whites and place them into a mixing bowl.

Step 2
Whip the egg whites for about 1 minute using a hand mixer (or stand mixer) until they look frothy and slightly airy.

Step 3
Slowly add the confectioners sugar a little at a time until it is fully incorporated. For this step, mix it in by hand so it blends in without flying out of the bowl.
Step 4
Add the vanilla and mix it in with your spoon.
Step 5
Give the icing a final blend with your mixer until the icing looks smooth and glossy with a nice even texture.

Use Real Vanilla Extract
If you can, use real vanilla extract instead of the fake stuff for a fuller, richer flavor that makes the icing taste better without taking away from the smooth texture. It blends easily into royal icing and gives a gentle sweetness that pairs well with sugar cookies.

Tips For Making Flooding Icing
Use room temperature egg whites so they whip up with more volume and blend more smoothly with the sugar. This helps the royal icing feel lighter and easier to spread or pipe on sugar cookies. It also gives a clean finish that holds shape nicely once it dries.
Frequently Asked Questions
Why is my royal icing too runny?
Royal icing can turn out runny if too much liquid is added at the start or if the sugar has not fully blended in yet. Adding confectioners sugar a little at a time helps bring it back to a thicker texture that works better for decorating and flooding your sugar cookies. Letting it sit for a short time can also help it settle before adjusting again.
How long does royal icing take to dry?
Royal icing usually starts to set within a few hours depending on thickness and room conditions. Thicker icing used for piping dries faster than thinner icing used for filling cookie surfaces. Most decorated sugar cookies are fully set after sitting overnight at room temperature.

Can I store royal icing for later use?
Royal icing can be stored in an airtight container so it stays usable for a short time after mixing. Placing plastic wrap directly on top of the icing helps keep it from drying out. Before using it again, it may need a quick stir to bring back a smooth texture.
What is the best consistency for decorating cookies?
The best consistency depends on the decorating step you are working on with sugar cookies. Thicker icing works well for outlining shapes and holding detail, while a slightly thinner texture spreads smoothly for filling areas. Adjusting small amounts of sugar or liquid helps you reach the right flow for each part of decorating.
Uses For Royal Icing
- Decorating sugar cookies with detailed designs
- Flooding cookies for a smooth finish
- Piping flowers, borders, and decorative accents
- Writing names and messages on baked goods
- Decorating gingerbread houses
- Creating edible cake toppers and decorations
- Making holiday and special occasion treats look festive
More recipes to try
- Basic chocolate truffles recipe
- Homemade chocolate chips recipe
- Cranberry scones with orange
- Soft and chewy chocolate chip cookies






