When you’re baking a cake for a special occasion, whether it’s a birthday, holiday or just to brighten someone’s day, you want to make sure that it turns out just right. Soft, moist, tender and most importantly, special. But how can you really know what’s going on inside? It’s not like you can just sneak a bite to test it.
One of the most influential ingredients is the flour, which can completely change the texture, structure, flavor and overall feel of your cake.
To see how much flour really matters, I baked the same cake recipe four times, changing only the flour. I used three cake flours and one all-purpose flour.
The results were anything but subtle, and one of them actually had me a bit worried.
At a Glance: The Best Flour for Cakes
Here’s a quick snapshot of how each flour I tested performed when used with the same cake recipe.
- Swans Down Cake Flour: Soft and fluffy with a light, airy, delicate crumb and tender texture.
- Gold Medal All-Purpose Flour: Moist and sturdy, with a slightly denser crumb and a mild bready flavor.
- Bob’s Red Mill Cake Flour: Flatter and more compact, moist and soft with a velvety texture and rich, buttery flavor.
- King Arthur Cake Flour: Light and airy, with a delicate, fluffy texture and mild flavor.
Why Flour Matters in Cake
Before we get into more results of my experiment, let’s talk about cake flour and all-purpose flour and why the flour you use can make such a big difference in your cakes. Basically, it all comes down to the protein content, which affects the amount of structure that develops during mixing and baking.
Cake flour has a lower protein content, typically 6–8%. This means it develops less structure, giving cakes a light, fluffy, airy texture. If you think about the lightest, airiest cakes of them all—angel food cake—it’s the cake flour that gives it that impossibly light and cloud-like texture.
All-purpose flour has a higher protein content, typically 10–12%. This gives cakes a slightly stronger structure that bakes up a bit denser and sturdier, while still keeping them soft and tender.
For the record, neither flour option is right or wrong. Both types of flour can absolutely bake up beautiful, tender and delicious cakes. It just depends on what type of cake you love and want to serve.
How I Tested the Flours
To keep my experiment as apples-to-apples as possible, I used the exact same vanilla cake recipe, mixing method, pan preparation, everything. The only thing I changed was the flour. And I chose four popular flours that are commonly used for baking cakes.
- Gold Medal All-Purpose Flour
- King Arthur Cake Flour
- Swans Down Cake Flour
- Bob’s Red Mill Super-Fine Cake Flour
Then I lined them up side by side and evaluated them for how they looked, felt and, most importantly, tasted. And whether it truly felt like a special occasion cake. I even enlisted a second blind taste tester.
Here’s how each one turned out.
The Results… Cake by Cake
Gold Medal All-Purpose Flour
I chose Gold Medal All-Purpose Flour as a baseline for comparison with the other flours because it’s probably most similar to what many of us already have in our pantries. And also because it has a lower protein content than some other all-purpose flours, making it a common choice for cake bakers.
The batter was noticeably thicker and a bit lumpier than the others, which gave it a slightly heavier feel right from the start. That carried through to the finished cake, which baked up a little denser and more structured, but still soft, moist and delicious.
- Structure and appearance: Even rise with a slight dome, slightly unevenly browned top with well-browned edges; clean slices without crumbling.
- Texture and moisture: Soft and moist, with a slightly coarse, denser crumb.
- Flavor: Mild, with a subtle, pleasant bready note.
- Best for: A slightly sturdier, denser cake that holds its shape well for transporting or decorating. Great for richer cakes like carrot cakes or pound cakes. And if it’s what you have on hand, you’ll still get a cake you’ll be proud to serve.
King Arthur Cake Flour
I included King Arthur Cake Flour to see how a highly-rated cake flour would stack up against all-purpose flour and other popular cake flours.
The batter was smooth, fluffy and thick, and it baked up just as light and airy, with that classic bakery-style look, feel and flavor.
- Structure and appearance: Tall, fluffy rise with a rounded dome and evenly browned top and edges; neat, clean slices.
- Texture and moisture: Light and airy with a fine, delicate crumb. Slightly less moist than the others, but still soft and tender.
- Flavor: Light and neutral with a classic cake flavor that lets frostings and fillings shine.
- Best for: Light, airy, classic celebration cakes, angel food cakes, chiffon cakes or any cake with a soft, delicate crumb.
Swans Down Cake Flour
Swans Down Cake Flour is a go-to for many bakers when it comes to classic cakes, so I wanted to see how it compared to the other cake flours. In this test, it performed very similarly to King Arthur Cake Flour. The batter was soft, smooth and fluffy, and the finished cake had that traditional bakery-style look and feel.
- Structure and appearance: Tall rise with a rounded dome, evenly browned top and sides; slightly crumbly when sliced.
- Texture and moisture: Light and airy with a fine, tender crumb; slightly drier with a soft, delicate texture.
- Flavor: Neutral with a subtle buttery note and a light, classic cake flavor.
- Best for: Traditional bakery-style birthday cakes or layer cakes; light and airy angel food cakes and chiffon cakes.
Bob’s Red Mill Super-Fine Cake Flour
Bob’s Red Mill Super-Fine Cake Flour gave the most unexpected results—and a few moments of doubt, if I’m being honest.
The flat, slightly puckered top was my first cause for pause. And the slight crumbling on the sides had me worried it would fall apart when sliced, but no. It sliced cleanly and held together beautifully.
Inside was a tighter, more compact crumb, which made me wonder if the cake would be too thick and dense. Again, no. The texture was soft and tender with a moist, almost velvety feel that completely changed my first impression.
- Structure and appearance: Even rise with a flatter top, evenly browned sides with slight crumbling; clean slices.
- Texture and moisture: Soft and tender with a tighter, slightly dense crumb; very moist with a smooth, luxurious feel.
- Flavor: Rich, buttery and slightly sweeter; the most distinctive flavor of all the flours.
- Best for: A reliably moist, soft cake with a velvety smooth texture that feels rich, indulgent and a little more special.
How to Choose the Right Flour for Your Cake
As you can see, when it comes to choosing the best flour for cakes, it doesn’t really come down to what’s “best.” It’s more about the kind of cake you love and want to bake.
If you’re looking for a cake with a light, airy, delicate texture, both King Arthur Cake Flour and Swans Down Cake Flour will deliver that traditional soft texture and mild flavor that you might expect in a birthday cake, layer cake or cupcakes, and feather-light angel food cakes and chiffon cakes.
For a cake that’s a bit more moist, sturdy and dense, and that will hold up well to stacking, decorating or transporting, all-purpose flour is a great option, especially for denser cakes like carrot cakes and pound cakes.
For a great middle-of-the-road option, Bob’s Red Mill Super-Fine Cake Flour is a dependable choice for soft, moist cakes with a velvety texture and sweet, buttery flavor. It’s perfect for special occasion cakes when you want something a little more indulgent, simple frosted layer cakes and sheet cakes or a cake that’s flavorful enough to stand on its own with just a dusting of powdered sugar and fresh fruit.
Once you know what to expect from each flour, it takes the guesswork out of baking and makes it easier to bake a cake you feel confident sharing with the ones you love.
