How to make a gluten-free all-purpose flour blend

A reliable gluten-free all-purpose flour blend is a cornerstone of gluten-free baking. While many commercial blends are available, making your own gives you complete control over the ingredients and their ratios. This can be especially helpful for managing additional dietary needs or simply for achieving a specific texture in your baked goods.

This recipe focuses on weighing ingredients, which is the most accurate way to replicate results in gluten-free baking. Different flours have different densities, so volume measurements (cups) can vary significantly depending on how you scoop. Using a digital kitchen scale removes the guesswork and ensures your blend is consistent every time.

The recipe

Makes about 7 cups (1000 g)Hands-on 10 minStart to finish 10 min

Ingredients

• 2 2/3 cups (about 400 g) brown rice flour
• 1 7/8 cups (about 300 g) white rice flour
• 1 1/4 cups (about 200 g) potato starch
• 3/4 cup plus 2 tablespoons (about 105 g) tapioca starch
• 4 teaspoons xanthan gum

Method

1. Set up scale. Place a large bowl on a digital kitchen scale and press the tare button to zero out the weight.
2. Weigh flours. Weigh the brown rice flour, white rice flour, potato starch, and tapioca starch directly into the bowl. Zero out the scale after adding each ingredient for the most accurate measurements.
3. Add xanthan gum. Add the xanthan gum to the bowl with the other flours and starches.
4. Whisk thoroughly. Use a large whisk to mix all the ingredients together for at least two full minutes. This is a critical step to ensure the xanthan gum is evenly distributed throughout the blend.
5. Store properly. Transfer the finished flour blend to a large, airtight container. Label the container with the name of the blend and the date it was made.

Why this blend works for gluten-free baking

Gluten, a protein in wheat, barley, and rye, provides structure, elasticity, and chewiness in traditional baking. To replicate these qualities, gluten-free flour blends use a careful combination of different flours and starches. Each component serves a specific purpose, and the ratio is key to a successful outcome.

The role of each ingredient

This blend is built on a common ratio that balances structure, lightness, and tenderness for a wide range of recipes.

• Whole grain flour: Brown rice flour provides structure, a slightly nutty flavor, and nutritional value. It acts as the foundation of the blend, similar to how whole wheat flour might function in traditional baking.
• Light grain flour: White rice flour contributes a neutral flavor and a lighter, more delicate texture. It helps prevent baked goods from becoming too dense or heavy, balancing the heartiness of the brown rice flour.
• Starches: Potato starch and tapioca starch are essential for texture. Potato starch creates a soft, tender crumb, while tapioca starch adds a bit of chewiness and helps with browning. Together, they mimic the soft texture that gluten provides.
• The binder: Xanthan gum is a hydrocolloid that acts as a binder and emulsifier. It provides the elasticity and viscosity that would otherwise be missing, holding the batter together and trapping air bubbles to help baked goods rise. Without a binder like xanthan gum, gluten-free cakes and cookies would be crumbly and fall apart.

The importance of using a scale

You might wonder why weighing ingredients is so emphasized in gluten-free baking. Gluten-free flours vary greatly in how they are milled and how they settle in a container. One person’s scooped cup of brown rice flour could weigh significantly more or less than another’s. This variability can drastically change the outcome of a recipe, leading to results that are too dry, too gummy, or too dense.

A digital kitchen scale eliminates this problem. By measuring by weight (grams), you ensure that you are using the exact same amount of each flour every time you bake. This precision is the single most effective way to achieve consistent, predictable results with your gluten-free recipes.

How to use this all-purpose flour blend

This blend is designed to be a versatile substitute for conventional all-purpose flour in many recipes. It works especially well in items that do not rely heavily on gluten for structure, such as:

• Cookies
• Muffins and quick breads
• Cakes and cupcakes
• Pancakes and waffles
• Fudgy one-bowl gluten-free brownies and blondies

You can generally substitute this blend 1:1 by weight for the all-purpose flour in a conventional recipe. If a recipe calls for 1 cup of all-purpose flour, you would use about 140 grams of this blend. Because this blend already contains xanthan gum, you should omit any xanthan gum called for in the recipe you are adapting. If you are using a recipe already developed to be gluten-free, use this blend as a direct replacement for the all-purpose gluten-free blend listed.

This blend is not formulated for yeast breads, which require a more complex structure to trap the gases produced by yeast. While it can be used for some pizza doughs or simple rolls with adjustments, dedicated gluten-free bread flours often produce better results for those applications.

Ingredient substitutions and variations

You can adjust this blend based on your preferences or what you have available, but keep in mind that any change will affect the final texture and flavor of your baked goods.

• Brown rice flour: Sorghum flour is an excellent substitute, offering a mild, slightly sweet flavor and a smooth texture. You can swap it 1:1 by weight for the brown rice flour.
• White rice flour: There is no direct substitute that provides the same neutrality. You could try using more sorghum flour or a light buckwheat flour, but this will change the flavor profile.
• Potato starch: You can use cornstarch in equal measure by weight. Cornstarch will produce a slightly less tender crumb than potato starch, but it works well in most applications. Do not use potato flour, which is a different product and will make the blend heavy and dense.
• Tapioca starch: Arrowroot starch can be substituted 1:1 by weight. It provides a similar chewiness and aids in browning.
• For a gum-free blend: If you need to avoid gums, you can omit the xanthan gum when making the master blend. Instead, add psyllium husk powder directly to your individual recipes as needed, typically 1 to 2 teaspoons per 140 grams of flour blend. This technique is used in our soft gluten-free sandwich bread recipe.

Storing your homemade flour blend

To keep your flour blend fresh, proper storage is important. Transfer the finished mix to a large, airtight container. A plastic or glass container with a tight-fitting lid works well. Store it in a cool, dark, and dry place like a pantry or cupboard.

When stored correctly, the blend will stay fresh for up to three months at room temperature. For longer storage, you can keep the container in the refrigerator for up to six months or in the freezer for up to a year. If you store it cold, allow the flour to come to room temperature before using it in your recipes to ensure accurate measuring and proper performance, especially in temperature-sensitive recipes like cakes.

Before each use, give the container a good shake or stir the flour with a whisk. The different flours can settle into layers over time, and remixing them ensures you get the correct ratio of ingredients in every scoop.

When to loop in your doctor or dietitian

If you suspect you have celiac disease or another gluten-related disorder, you should speak with a doctor before starting a gluten-free diet. Testing for celiac disease requires that you are still eating gluten.

For those with a new diagnosis, a registered dietitian can provide valuable guidance. They can help you build a balanced, nutritious diet and learn to identify hidden sources of gluten to ensure your diet is safe and complete.