How to Heat Treat Flour - 2 Easy Ways! (2024)

Wondering how to heat treat flour to make edible cookie dough or other no-bake desserts made with flour? The process is quick and easy. All you need is flour and 20 minutes!

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The Easy Way to Make Raw Flour Safe to Eat

Did you know that raw flour is one of the reasons you’re not supposed to eat raw cookie dough? I think most people believe it’s due to the raw eggs…but in reality, the flour can make you just as sick!

It may not seem like a regular occurrence as I’m sure most of us have indulged in a spoonful of raw cookie dough over the years, but it’s not something you want to take a chance with – especially when baking raw flour to make it safe to eat is so easy!

When & Why Do You Need to Heat Treat Flour?

Raw flour can contain bacteria like e. coli or salmonella so it’s important to always heat your flour to a temperature of 160F before eating. (This is what makes eating edible cookie dough safe!)

When do you need to heat treat flour? It should always be heated properly before being consumed – but that’s something that likely doesn’t cross your mind as it’s typically used in desserts and other recipes that are cooked.

However, when it comes to using flour in any recipe that’s not baked or cooked, it needs to be heat treated. This includes cake mixes used in things like my no bake funfetti cheesecake. If it contains flour and won’t be baked, the must be heat treated before adding it to the recipe.

How to Heat Treat Flour in the Oven

So, how do you heat treat flour to make it safe for eating? Luckily the process is super quick and easy. The key is just heating the flour to a temperature of at least 160°F.

  1. Preheat and prepare. Preheat the oven to 350°F. Prepare a baking sheet lined with parchment paper or a silicone baking mat.
  2. Bake. Bake for approximately 7-10 minutes, or until the temperature of the flour reaches 160°F. I recommend stirring the flour once or twice to help break it up.
  3. Sift and cool. Sift the flour through a fine mesh sieve before using and cool completely.
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Can You Do This in The Microwave?

Whether or not you can heat treat flour in the microwave is a question I often receive on my posts. And the answer is yes, you can heat treat flour in the microwave.

The key, as I mentioned above, is getting it to reach a temperature of 160°F.

To do this in the microwave, just cook in 30-second intervals, stir, and continue microwaving until the temperature is reached. It should take just a few minutes.

I will say that this technique is much better if you only need a small amount of flour, like a cup. It’s a bit difficult to microwave large amounts of flour – the oven is definitely better in those situations.

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How to Take The Temperature of Flour

To ensure the flour reaches the appropriate temperature, make a pile of flour with a spatula and insert the thermometer into the flour (but don’t touch the baking sheet). Once it reads 160°F you’re good to go.

Tips for Success

Here are a few helpful hints for baking flour.

  • Sift after heat-treating. Be sure to sift any heat-treated flour, through a fine mesh sieve because the flour gets clumped together when it’s baked.
  • Line the baking sheet. This helps to easily remove the flour from the pan into the sieve.
  • Do not overbake. If the flour is overbaked, it will be toasted and in which case you may not want to use it as it will alter the flavor of the flour.
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Can You Heat Treat Cake Mix?

Yes, you can also use this method to heat treat for cake mix if a recipe calls for raw cake mix like my Cake Batter Whipped Cream or No-Bake Funfetti Cheesecake. Since cake mix is made with raw flour, this is an important step to take!

How to Store it

Once cooled, heat treated flour can be stored in an airtight container. Keep in your pantry or another cool, dry location. I like to heat treat several cups at a time in the oven, so I always have some on hand whenever I want to whip up an edible cookie dough treat.

Recipes That Use Heat Treated Flour:

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How to Heat Treat Flour - 2 Easy Ways! (2024)

FAQs

What is the easiest way to heat treat flour? ›

Simply spread a thin layer on a baking sheet and heat it in your oven at 300°F for about 10 minutes or until it reaches a temperature of 160°F. If that seems too intensive, you can also place the flour in a microwave safe bowl and microwave it in 30 second increments until the temperature reaches 160°F.

Can I heat treat flour in the microwave? ›

And the answer is yes, you can heat treat flour in the microwave. What is this? The key, as I mentioned above, is getting it to reach a temperature of 160°F. To do this in the microwave, just cook in 30-second intervals, stir, and continue microwaving until the temperature is reached.

How do you know if flour is heat treated enough? ›

Check the temperature of the flour in a few different spots to make sure the entire batch is properly heated. Some ovens have hot spots, and this can cause the flour to heat unevenly. Repeat this process until the temperature of the flour reaches 160 F / 71 C.

What temperature is heat treated flour? ›

What is Heat Treated Flour? Heat treated flour has been heated to an optimal temperature range of 210°F to 230°F for 60 minutes. It can: Extend shelf life.

Can you eat flour without heat treating it? ›

Don't eat, taste, or allow children to eat or play with raw dough products or baking mix before cooking. Don't let children use raw dough for crafts/play clay. Don't try to heat treat flour in your own home. Home treatments of flour may not effectively kill all bacteria and do not make it safe to eat raw.

Is 30 seconds enough to heat treat flour? ›

Place the flour in the bowl and microwave on high for 30 seconds at a time, stirring between each interval. Stir well to make sure none of the ingredient burns (microwaves have those tricky hot spots). 3. Use an instant-read thermometer to test the grain in several places to make sure it has reached 165°F throughout.

What happens if you don't use heat treated flour? ›

So if you want to enjoy your no-bake treats without fear of a little side of e. coli or salmonella, the easiest thing to do is to heat-treat your flour. This is a super simple process of cooking the flour at a temperature that kills off any of the gross bacteria that might be left over from the processing of the wheat.

Can you use flour 5 years out of date? ›

Wheat-based refined flours usually can be used past the expiration date (up to a year at your house), especially if it's been stored in a cool, dry place. 2 You'll want to be careful about self-rising flour, though, as the baking powder that's mixed into the flour can lose its effectiveness over time.

How do you heat treat flour without a food thermometer? ›

Heat Treat Flour in the Oven

Spread 2-3 cups of flour on a rimmed baking sheet. You can line the pan with parchment paper or Silpat to keep the flour from sticking, if you like. Bake for 2 minute intervals, stirring and moving the flour around after each. Repeat until the flour reaches 165 degrees.

What's the difference between heat treated flour and regular flour? ›

Heat-treated flour heats away the bacteria, making your flour safe to eat raw. You're essentially pre-baking the flour before it's used in the cookie dough! That's why we can sell you raw cookie dough, knowing that you will be perfectly safe!

How long does it take to cook out flour taste? ›

Once you've combined the flour and melted butter, the roux needs to be cooked for at least 2 minutes to cook out the raw flour. You can then choose to add your liquids to create a sauce or even continue cooking the roux.

Is flour in cake mix heat treated? ›

Note about dry cake mix: Cake mix should be heat treated to kill any potential bacteria in raw flour, you can quickly heat treat it by spreading it out onto a baking sheet and toasting it at 350°F for 5 minutes.

Can you heat treat flour in the air fryer? ›

We also don't recommend using an air fryer, as the air circulation makes it unsuitable. Ideally, use a food thermometer to check the temperature of the flour when cooking. The flour should be heated to 70°C for a minimum of 2 minutes.

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