Powdered Sugar Substitute: Best Alternatives for Any Recipe
The best powdered sugar substitute for frostings and sweetening is granulated sugar blended with cornstarch. Use a ratio of 1 cup granulated sugar + 1 tablespoon cornstarch, blended together in a food processor until fine. Other excellent options include honey (use 3/4 cup per 1 cup powdered sugar), maple syrup (use 3/4 cup per 1 cup powdered sugar), or a simple combination of granulated sugar dissolved in liquid. Whether you’re out of powdered sugar at the last minute or looking for a healthier powdered sugar substitute, these alternatives deliver smooth, sweet results that work beautifully in frosting, icing, and dusting applications.
Quick Comparison Table
| Substitute | Ratio (per 1 cup powdered sugar) | Best For | Result Quality |
|---|---|---|---|
| Granulated Sugar + Cornstarch | 1 cup granulated + 1 tbsp cornstarch | All-purpose frostings, glazes, dusting | ★★★★★ |
| Honey | 3/4 cup honey | Thick frostings, glazes, caramel notes | ★★★★☆ |
| Maple Syrup | 3/4 cup maple syrup | Cream cheese frosting, autumn desserts | ★★★★☆ |
| Coconut Sugar + Cornstarch | 1 cup coconut sugar + 1 tbsp cornstarch | Vegan baking, caramel-like flavor | ★★★★☆ |
| Granulated Sugar + Arrowroot | 1 cup granulated + 1 tbsp arrowroot | Dairy-free, gluten-free frostings | ★★★★☆ |
| Agave Nectar | 2/3 cup agave nectar | Smooth glazes, delicate frostings | ★★★☆☆ |
| Brown Sugar + Cornstarch | 1 cup packed brown + 1 tbsp cornstarch | Molasses-flavored frostings, spiced cakes | ★★★★☆ |
| Allulose + Cornstarch | 1 cup allulose + 1 tbsp cornstarch | Low-sugar, keto frostings | ★★★★☆ |
Why Powdered Sugar Matters in Frostings and Sweetener Applications
Powdered sugar (also called confectioners’ sugar or icing sugar) is granulated sugar ground into an extremely fine powder, then mixed with a small amount of cornstarch to prevent clumping. This specific texture serves a crucial purpose: the fine particles dissolve instantly into batters and frostings, creating an incredibly smooth mouthfeel and glossy finish. The cornstarch component is equally important—it absorbs moisture and prevents the final product from becoming grainy or crystallized. When you frost a cake with powdered sugar, those microscopic particles blend seamlessly with butter, cream cheese, or liquid components, creating that signature silky frosting that melts on your tongue. Without this fineness, you’d taste grittiness and struggle to achieve a smooth consistency.
The starch content also affects how frostings set and hold their shape. Cornstarch absorbs moisture slowly, which means powdered sugar frostings firm up beautifully as they sit, holding decorative peaks and swirls. This is why a homemade powdered sugar substitute must include a starch component—without it, your frosting will be too soft, greasy, or grainy. Additionally, powdered sugar dissolves almost instantly when combined with liquid (buttermilk, cream, or egg whites), making it ideal for glazes and icings that need to be pourable yet sweet. Understanding this chemistry helps you appreciate why certain substitutes work better than others, and why simply using regular granulated sugar won’t give you the same results.
1. Granulated Sugar + Cornstarch (Best Overall)
Ratio: 1 cup granulated sugar + 1 tablespoon cornstarch
This is hands-down the easiest and most reliable powdered sugar substitute, and it’s likely you already have both ingredients in your kitchen. Simply measure 1 cup of granulated white sugar and 1 tablespoon of cornstarch into a food processor or high-powered blender. Pulse for 3-5 minutes, pausing occasionally to break up any clumps, until the mixture is completely smooth and powdery. You want it to feel like actual powdered sugar when you rub it between your fingers—no gritty texture remaining. This usually takes longer than you’d expect; be patient. Once processed, sift the mixture through a fine-mesh strainer to catch any remaining granules or clumps. If you don’t have a food processor, you can use a spice grinder, coffee grinder (dedicated to spices/sugar), or even a blender, though blenders take longer and heat up the sugar slightly.
The beauty of this substitute is that it performs identically to real powdered sugar in nearly every application. The ratio replicates the exact proportion of sugar to starch found in commercial powdered sugar, so your frostings will have the same silky texture, the same setting properties, and the same mouthfeel. When you beat this homemade version with butter and vanilla, it creates frostings that are just as thick and spreadable as those made with store-bought powdered sugar. The cornstarch absorption also works the same way, so your frosting won’t weep or become oily as it sits. This is the best choice if you’re making buttercream frosting, cream cheese frosting, or any frosting that needs to be thick enough to pipe.
Texture and taste: Identical to powdered sugar frosting—smooth, silky, melts on the tongue, holds piping detail beautifully. No flavor difference whatsoever.
Best for: All-purpose use—buttercream frosting, cream cheese frosting, royal icing, glazes, dusting cakes, doughnuts, or cookies. This is your go-to substitute for any recipe calling for powdered sugar.
2. Honey (Best for Rich, Thick Frostings)
Ratio: 3/4 cup honey per 1 cup powdered sugar
Honey is a liquid sweetener that works beautifully in frostings, though it changes the final texture and flavor profile significantly. If you’re replacing 1 cup of powdered sugar in a recipe, use 3/4 cup of honey instead. Because honey contains water, you may need to add slightly less liquid elsewhere in your frosting recipe—for example, if your recipe calls for 2 tablespoons of milk, reduce it to 1 tablespoon when using honey. Start with this reduction and add more liquid only if needed. Honey also adds its own distinct flavor: a subtle floral sweetness and a slight caramel undertone that deepens the taste profile. This works wonderfully in cream cheese frosting, chocolate frosting, or caramel-flavored applications, but may clash with delicate vanilla or berry flavors.
The texture of honey-based frostings is thicker and more fudgy than powdered sugar frostings, almost more like a glaze or ganache. It won’t hold piping peaks as sharply as cornstarch-based frostings, but it spreads beautifully and creates a glossy, professional finish. The honey also adds a subtle stickiness to the frosting, which some bakers love for creating a rustic, homemade appearance. One important note: never substitute honey for powdered sugar when making royal icing (the kind used for decorative piping and detail work on cookies). Honey doesn’t set firm enough for that application, and the results will be disappointing.
Texture and taste: Thicker, glossier frosting with a fudgy consistency and caramel-honey flavor notes. Less sharp sweetness than powdered sugar. Doesn’t set as firmly.
Best for: Cream cheese frosting, chocolate frosting, glazes for cakes and pastries, caramel-flavored frostings. Also excellent for frosting with a more rustic, organic appearance.
3. Maple Syrup (Best for Autumn Flavors)
Ratio: 3/4 cup pure maple syrup per 1 cup powdered sugar
Pure maple syrup is another liquid powdered sugar substitute that brings distinctive flavor to frostings. Use the same 3/4 cup ratio, and again, reduce other liquids in your recipe slightly since maple syrup adds moisture. Make sure you’re using pure maple syrup, not pancake syrup (which contains corn syrup and additives). The maple flavor is quite pronounced, making this substitute ideal for fall-themed desserts: apple cakes, spiced layer cakes, pecan pies, or pumpkin treats. If you’re making a vanilla frosting for a birthday cake, maple syrup will overpower the delicate vanilla flavor, so reserve this substitute for recipes where the maple addition makes sense.
Maple syrup creates a frosting that’s slightly less thick than honey-based versions, with a more fluid consistency. The color will be deeper and warmer—perfect if you’re going for an earthy, seasonal aesthetic. Like honey, maple syrup doesn’t create the same firm set that powdered sugar does, so this isn’t the best choice for piping intricate details. However, it’s excellent for spreading, swirling, or creating a drip-down frosting effect on layered cakes. The frosting will remain slightly soft, giving it an almost old-fashioned buttercream appeal.
Texture and taste: Smooth, slightly fluid frosting with warm maple flavor and woodsy notes. Doesn’t set as firmly. Beautiful warm color.
Best for: Autumn cakes, spiced cakes, apple cakes, pecan cakes, cream cheese frosting with maple, glazes for fall pastries.
4. Coconut Sugar + Cornstarch (Best for Plant-Based Baking)
Ratio: 1 cup coconut sugar + 1 tablespoon cornstarch
Coconut sugar is a lower-glycemic sweetener derived from coconut palm sap, making it popular in health-conscious baking. Process it exactly like granulated sugar: combine 1 cup of coconut sugar with 1 tablespoon of cornstarch and pulse in a food processor for 3-5 minutes until completely fine and powdery. This takes slightly longer than regular sugar because coconut sugar has a slightly different texture—it’s more moist and compact. Be thorough with the processing; you want no granules remaining. Sift the finished powder through a fine-mesh strainer to ensure ultimate smoothness.
The primary advantage of coconut sugar is its subtle caramel-like flavor and lower glycemic index, making it appealing to people managing blood sugar. The frosting performs similarly to regular powdered sugar frosting, with good structure and setting properties. However, coconut sugar’s molasses notes give the frosting a slightly warmer flavor profile—not as neutral as white powdered sugar. This works beautifully in chocolate frostings, carrot cake frosting, or spiced applications, but may add unwanted complexity to delicate vanilla or berry frostings. The color of the finished frosting will be slightly warmer and more cream-colored rather than pure white.
Texture and taste: Similar to powdered sugar frosting in texture and function, but with subtle caramel and molasses notes. Slightly less bright sweetness.
Best for: Vegan baking, plant-based frostings, chocolate cakes, spiced cakes, carrot cakes, or any application where caramel notes enhance the flavor.
5. Granulated Sugar + Arrowroot (Best for Allergen-Free)
Ratio: 1 cup granulated sugar + 1 tablespoon arrowroot powder
If you need to avoid cornstarch due to allergies or dietary restrictions, arrowroot powder is an excellent substitute for the starch component. Arrowroot is derived from tropical plants and has a milder flavor than cornstarch. Process 1 cup of granulated sugar with 1 tablespoon of arrowroot powder using the same method: pulse in a food processor for 3-5 minutes until completely smooth. The results are nearly identical to cornstarch-based powdered sugar; in fact, many professional bakers prefer arrowroot because it creates an even silkier, less chalky texture. Arrowroot also absorbs moisture effectively, so your frosting will set and firm up just as nicely as cornstarch-based versions.
This substitute works perfectly for people with corn allergies or sensitivities, and it’s also appropriate for many paleo and whole-food diet approaches. The frosting performance is virtually identical to the granulated sugar + cornstarch version, with excellent structure, piping capability, and flavor neutrality. If you have access to arrowroot but not cornstarch, use this version without hesitation—the quality difference is minimal and mostly noticeable only to experienced pastry chefs.
Texture and taste: Nearly identical to powdered sugar frosting, possibly even silkier. Flavor-neutral, excellent structure and set.
Best for: Allergen-free baking, corn-free diets, paleo baking, or whenever arrowroot is preferred to cornstarch. All frosting applications.