These donuts are built around an almond flour and erythritol base, air fried in donut-shaped molds instead of being deep fried, and finished with a cinnamon sugar coating applied not once, but twice. The entire process — mixing dry ingredients, whisking wet ingredients, piping into molds, and air frying in batches — takes about 25 minutes total, making it a genuinely quick keto dessert.

Because the donuts are air fried rather than deep fried, batch size matters more here than in many other recipes — most air fryers can only fit four of the six donuts at a time, so this recipe is built around cooking in two rounds rather than one.

Understanding the Components

Before starting, it helps to separate this recipe into its three working parts:

1. The Donut Batter Almond flour, erythritol, baking powder, xanthan gum, and salt are whisked together as the dry base. Separately, eggs, melted coconut oil, almond milk, vanilla extract, and liquid stevia are combined as the wet mixture, which is then stirred into the dry ingredients.

2. The Cinnamon Sugar Coating Granulated erythritol and cinnamon are mixed together and used to coat the donuts after their initial bake.

3. The Double-Bake Finish After the donuts are coated in cinnamon sugar the first time, they go back into the air fryer briefly at a higher temperature, then get a second coating of cinnamon sugar immediately afterward.

Kitchen Workflow: The Order That Actually Saves Time

Here’s the most efficient order to work through this recipe:

Step 1 — Mix the dry ingredients. In a large bowl, whisk together the almond flour, erythritol, baking powder, xanthan gum, and salt.

Step 2 — Mix the wet ingredients and combine. In a medium bowl, lightly beat the room-temperature eggs. Whisk in the melted coconut oil, almond milk, vanilla, and liquid stevia. Pour this mixture into the bowl with the dry ingredients and stir to combine.

Step 3 — Preheat the air fryer and prep the pans. Preheat the air fryer at 330°F for 3 minutes. Spray donut pans or molds with avocado oil.

Step 4 — Pipe the batter. Pipe the batter into six 3-inch donut cavities, filling each about three-quarters full. Tap the pan on the counter to settle the batter and reduce air bubbles.

Step 5 — Bake the first batch. Bake the donuts in the air fryer at 330°F for 8 minutes, checking with a toothpick for doneness. With many air fryers, you may need to bake a set of 4 donuts first, then the remaining 2.

Step 6 — Cool and prepare the coating. Remove the donuts from the air fryer and let them cool in the pan for 5 minutes. Meanwhile, mix together the erythritol and cinnamon in a bowl, and bake the remaining donuts if needed.

Step 7 — First coating. After the cooling time, carefully remove the donuts from the pan and coat both sides of each donut with the cinnamon sugar mix.

Step 8 — Second bake and final coating. Place the coated donuts in the air fryer with the flatter side down. Bake at 350°F for 2 minutes, then immediately coat with cinnamon sugar for a final time.

Using the 5-minute cooling window after the first bake to mix the cinnamon sugar coating (and bake the second batch of donuts, if needed) means there’s no wasted time — the coating is ready exactly when the donuts have cooled enough to handle.

Component Organization: Setting Up Your Station

A few organized zones make this multi-stage recipe easier to manage:

• A large bowl — for the dry ingredients
• A medium bowl — for the wet ingredients
• A piping bag or similar tool — for filling the donut cavities evenly
• Donut pans or molds sized for 3-inch donuts, sprayed with avocado oil — ready before you start piping
• The air fryer — preheating while you finish mixing the batter
• A small bowl — for the cinnamon sugar coating mixture
• A cooling area — for the donuts to rest for 5 minutes after their first bake

Because this recipe requires baking in batches (most air fryers can only fit 4 of the 6 donuts at once), having your cinnamon sugar coating ready to mix during the cooling and second-batch baking window keeps the whole process moving without gaps.

Step-by-Step Assembly Strategy

Assembly here really refers to the piping and coating stages:

1. Pipe the batter into the prepared donut cavities, filling each about three-quarters full — this leaves room for the donuts to rise slightly without overflowing.
2. Tap the pan on the counter after piping to settle the batter and reduce air bubbles, which helps create a more even texture.
3. Bake in batches if your air fryer can’t fit all six at once, using the toothpick test to check doneness for each batch.
4. Let the donuts cool in the pan for 5 minutes before attempting to remove them — this brief rest makes them easier to handle without breaking.
5. Coat both sides of each donut in the cinnamon sugar mixture once they’ve cooled enough to handle.
6. Return the coated donuts to the air fryer for a brief second bake, placing them flatter-side down, then coat them in cinnamon sugar one final time immediately after this second bake.

Practical Notes for Best Results

• Use room-temperature eggs, as specified, since they incorporate more smoothly into the wet mixture.
• Fill the donut cavities to about three-quarters full — overfilling can cause the batter to overflow as it bakes.
• Tap the pan on the counter after piping to reduce trapped air bubbles in the batter.
• Check doneness with a toothpick rather than relying solely on the stated bake time, since air fryer performance can vary.
• Let the donuts cool for the full 5 minutes before removing them from the pan, so they hold their shape.
• Coat the donuts in cinnamon sugar twice — once after the initial bake and cooling, and again immediately after the brief second bake — for the best coating adherence and flavor.
• Use a donut pan or mold sized specifically for 3-inch donuts that will fit in your air fryer; silicone molds can be cut to fit if needed.

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Part 2: Straightforward Recipe Card

Air Fryer Keto Donuts

Description: A quick and easy keto dessert the whole family will love — almond flour donuts air fried and coated twice in a cinnamon sugar mixture.

Servings: 6

Duration:

• Prep Time: 10 minutes
• Cook Time: 15 minutes
• Total Time: 25 minutes

Ingredients:

For the donuts:

• 1 ¼ cup almond flour (125 grams)
• ⅓ cup granulated erythritol (60 grams)
• 1 teaspoon baking powder
• ¼ teaspoon xanthan gum
• ⅛ teaspoon salt
• 2 eggs, room temperature
• 2 tablespoons coconut oil, melted
• 2 tablespoons unsweetened almond milk
• ½ teaspoon vanilla extract
• ¼ teaspoon liquid stevia

For the cinnamon sugar coating:

• 4 tablespoons granulated erythritol
• 1 ½ teaspoons cinnamon

Instructions:

1. In a large bowl, whisk together almond flour, erythritol, baking powder, xanthan gum, and salt.
2. In a medium bowl, lightly beat the room-temperature eggs. Whisk in the melted coconut oil, almond milk, vanilla, and liquid stevia. Pour the mixture into the bowl with dry ingredients and stir to combine.
3. Preheat air fryer at 330°F for 3 minutes. Spray donut pans or molds with avocado oil.
4. Pipe batter into six 3-inch donut cavities, filling about 3/4 full. Tap the pan on the counter to settle the batter and reduce air bubbles.
5. Bake donuts in the air fryer at 330°F for 8 minutes. Check with a toothpick for doneness. (With many air fryers, you may need to bake a set of 4 donuts first, then the remaining 2.)
6. Remove donuts from the air fryer and let cool in the pan for 5 minutes. Meanwhile, mix together the erythritol and cinnamon in a bowl (and bake the remaining donuts, if needed).
7. After cooling time, carefully remove donuts from the pan and coat both sides of each donut with the cinnamon sugar mix.
8. Place coated donuts in the air fryer with the flatter side down. Bake at 350°F for 2 minutes, then immediately coat with cinnamon sugar for a final time. Enjoy!

Notes:

• Use a donut pan or mold for 3-inch donuts that will fit in the air fryer. Silicone molds can be cut to fit.
• Nutrition per serving: 202 kcal, 7g carbohydrates, 7g protein, 18g fat, 150mg sodium, 3g fiber, 1g sugar.

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Medical Disclaimer: The nutritional and dietary information provided in this document is for general informational and educational purposes only and is not intended as, and should not be substituted for, professional medical or nutritional advice, diagnosis, or treatment. Nutritional values are approximate and may vary based on specific brands, ingredient substitutions, and portion sizes used. Individuals with food allergies, dietary restrictions, or medical conditions—including but not limited to tree nut allergies, egg allergies, or conditions affected by sugar alcohol intake—should consult a qualified healthcare provider or registered dietitian before making changes to their diet. Reliance on any information provided in this document is solely at your own risk.