Need powdered sugar for a recipe but only have granulated? Learning how to make powdered sugar with a blender is a straightforward process for when you’re out of the store-bought kind. This simple kitchen trick can save you a last-minute trip to the store and works surprisingly well.
You only need two basic ingredients and a common appliance. The result is a fine, fluffy sugar perfect for icings, dusting desserts, or any recipe that calls for confectioners’ sugar.
This guide will walk you through the exact steps, important tips for the best texture, and how to use your homemade version. Let’s get started.
how to make powdered sugar with a blender
The core method is simple: blend granulated sugar until it turns into a fine powder. However, a key ingredient prevents it from clumping. For every cup of granulated sugar, you need to add about one tablespoon of cornstarch. This acts as an anti-caking agent, just like in commercial powdered sugar.
Why does this work? The high-speed blades of a blender break down the sugar crystals through sheer force. The cornstarch gets incorporated during this process, ensuring your final product stays light and powdery instead of hardening into a rock-solid lump in your cupboard.
What You Will Need
Gathering your supplies before you begin makes the process quick and easy. You likely have everything already in your kitchen.
- A Blender: A high-speed blender works best, but most standard countertop blenders can handle the job. The key is to blend in small batches to avoid straining the motor.
- Granulated White Sugar: This is your base. Standard white sugar yields the purest color and flavor. Avoid using brown sugar or raw sugars for traditional powdered sugar, as they contain molasses and won’t achieve the same fine texture or color.
- Cornstarch: This is the essential add-in. As mentioned, use roughly 1 tablespoon per cup of sugar. If you don’t have cornstarch, arrowroot powder or a gluten-free starch can work in a pinch, though cornstarch is the standard.
- A Dry, Airtight Container: For storing your freshly made powdered sugar. Moisture is its enemy.
Step-by-Step Instructions
Follow these steps carefully for the best results. Rushing or overfilling the blender are the most common mistakes.
- Measure Your Ingredients: For your first batch, start with 1 cup of granulated white sugar. Add 1 tablespoon of cornstarch to the sugar. This ratio is easy to scale up or down as needed.
- Combine in the Blender: Pour the sugar and cornstarch mixture into your blender jar. Ensure the lid is on securely. It’s a good idea to start with a clean, completely dry blender to prevent any moisture from getting in.
- Blend in Pulses: Begin blending on a low setting for a few seconds to combine, then increase to the highest speed. Blend for about 30 to 60 seconds. You may need to stop and shake the jar gently to redistribute the sugar for even grinding.
- Check the Consistency: Stop the blender and carefully remove the lid. The sugar should look like a fine, white powder. Feel it between your fingers; it should be smooth with no gritty crystals. If it’s still gritty, secure the lid and blend for another 15-30 seconds.
- Let the Dust Settle: After blending, wait a minute before opening the blender completely. This allows the fine sugar dust to settle, preventing a messy cloud when you open it.
- Sift (Optional but Recommended): For the absolute finest texture, especially for delicate tasks like making buttercream frosting, sift the powdered sugar through a fine-mesh sieve. This catches any remaining larger granules.
- Store Immediately: Transfer your homemade powdered sugar to an airtight container. Store it in a cool, dry place like your pantry.
Why Add Cornstarch?
You might wonder why cornstarch is non-negotiable. Commercial powdered sugar, also called confectioners’ sugar or icing sugar, always contains an anti-caking agent—usually about 3% by weight. This prevents the super-fine sugar particles from absorbing moisture from the air and sticking together into hard clumps.
By adding cornstarch, you are replicating this commercial process. Without it, your blended sugar may work immediately but could become a solid block in storage. The cornstarch acts as a buffer between the tiny sugar particles, keeping them free-flowing.
Can You Make It Without Cornstarch?
Technically, yes, you can blend sugar into a powder without cornstarch. It will work for immediate use, such as dusting over pancakes or stirring into a glaze you plan to use right away. However, we do not recommend skipping it if you plan to store any leftover sugar. It will likely harden and require re-blending or vigorous breaking apart later.
Choosing the Right Blender
Not all blenders are created equal, but most can handle this task with a little patience.
- High-Speed Blenders (Vitamix, Blendtec): These are the most effective. They can pulverize sugar to a very fine powder quickly, often in under 30 seconds. You can make slightly larger batches.
- Standard Countertop Blenders: These work perfectly well. The key is to use smaller batches (1 to 2 cups max) and blend for a longer time, pulsing and shaking the jar to help the process. Don’t run the motor continuously for more than a minute; give it breaks to prevent overheating.
- Immersion (Hand) Blenders: These are not suitable for making powdered sugar. They lack the sealed container needed to contain the fine dust and are not designed for dry ingredients.
- Food Processors: A food processor can work, but it often yields a slightly grainier result than a blender because of its different blade motion. It’s better for chopping than true pulverizing. If it’s your only option, process for several minutes and expect to sift thoroughly.
Common Problems and Solutions
Even with a simple process, a few issues can pop up. Here’s how to fix them.
My Sugar is Still Gritty
If your sugar feels sandy after blending, it needs more time. This is usually because the batch was too large or the blending time was too short. Try these fixes:
- Blend in smaller batches. One cup at a time is ideal for standard blenders.
- Blend for longer intervals, pausing to shake the jar.
- Ensure you are using the highest speed setting.
The Sugar is Clumping or Smoking
Clumping during blending usually indicates moisture in the blender jar or sugar. Smoking is a sign of an overworked motor.
- Always start with a completely dry blender jar and dry ingredients.
- If you see smoke, stop immediately. Let the motor cool down. Your next batch should be much smaller.
- Clumps that form after storage mean the container wasn’t airtight, or cornstarch was omitted.
My Blender is Struggling
If your blender sounds labored, you are likely overloading it. Sugar is dense. Reduce the amount by half. For example, try blending 1/2 cup of sugar with 1.5 teaspoons of cornstarch instead. The smaller volume allows the blades to move freely and grind effectively.
Storage and Shelf Life
Proper storage is crucial for maintaining quality. Since homemade powdered sugar lacks the precise additives of commercial versions, it’s more susceptible to moisture.
- Always use an airtight container. A glass jar with a tight-sealing lid or a plastic container with a locking lid is perfect.
- Store in a cool, dry pantry, away from the stove or any source of heat and humidity.
- Correctly stored, your homemade powdered sugar should last as long as your regular granulated sugar—essentially indefinitely if kept dry. However, for the best texture, try to use it within a few months.
- If it develops any unusual odor or shows signs of moisture, it’s best to discard it and make a fresh batch.
How to Use Homemade Powdered Sugar
Your blender-made powdered sugar can be used anywhere commercial powdered sugar is called for. Here are some common uses:
- Frostings and Icings: It’s ideal for making buttercream, glaze for cinnamon rolls, or simple icing for cookies. Remember to sift it first for ultra-smooth results.
- Dusting Desserts: Lightly dust it over brownies, French toast, chocolate truffles, or a bundt cake for a professional finish.
- No-Bake Recipes: Use it in cheesecake fillings, pie fillings like key lime, or no-bake cookie mixtures.
- Sweetening Whipped Cream: Add a tablespoon or two to heavy cream while whipping for a stabilized, lightly sweetened topping.
A quick note: In recipes where powdered sugar is cooked, like in a buttercream that is then heated, your homemade version will perform identically to store-bought. The cornstarch is a normal recipe ingredient in many such applications.
Frequently Asked Questions
Can I make powdered sugar without a blender?
While a blender is the most effective common appliance, a clean coffee grinder or spice grinder is an excellent alternative. They are designed to grind hard substances into fine powders. Process small amounts (like 1/4 cup at a time) for the best results. A food processor, as mentioned, is a less effective last resort.
What’s the difference between powdered sugar, confectioners’ sugar, and icing sugar?
These terms are generally used interchangeably in the United States. They all refer to the same product: granulated sugar that has been milled to a fine powder with a small percentage (usually 3%) of cornstarch added. In some regions, “icing sugar” may be milled slightly finer, but for home baking purposes, they are the same.
Can I use this method to make other types of powdered sugar?
You can experiment, but results will vary. For a powdered brown sugar, use refined, light brown sugar and cornstarch. Be aware the molasses content will make it moist and prone to clumping; make it in very small batches for immediate use. For organic powdered sugar, simply start with organic granulated cane sugar and organic cornstarch.
Is homemade powdered sugar cheaper than store-bought?
It can be, especially if you already have granulated sugar and cornstarch on hand. The primary advantage isn’t always cost savings, but convenience. It eliminates the need for a special grocery trip for a single ingredient and reduces packaging waste. It’s a useful skill for any baker.
My recipe calls for a specific type of powdered sugar, like 10X. What does that mean?
The “X” rating refers to the fineness of the grind. 10X is the finest standard grind, common in the US. 6X and 4X are coarser. Your blender, especially if you sift the result, will produce a powder very close to a standard 10X confectioners’ sugar, suitable for nearly all recipes that don’t specify otherwise.
Final Tips for Success
To consistently make great powdered sugar at home, keep these last tips in mind. They address the small details that make a big difference.
- Always start with dry equipment. Any residual water from washing can ruin a batch.
- When scaling the recipe, maintain the 1 tablespoon cornstarch per cup of sugar ratio. For 2 cups of sugar, use 2 tablespoons of cornstarch.
- If you use your powdered sugar primarily for dusting, you can sometimes get away with a slightly shorter blend time since absolute fineness is less critical.
- For a super-white powder, use the whitest, most refined granulated sugar you have. Some organic cane sugars have a slight beige tint that will carry through.
Making powdered sugar in your blender is a reliable, quick kitchen technique. It demystifies a common baking ingredient and provides a practical solution when you’re in a pinch. With a little practice, you’ll find it just as easy as reaching for a box from the store, and perhaps even more satisfying. Give it a try the next time your recipe calls for confectioners’ sugar and you’ll see how simple it really is.