Keto Lemon Donuts – Bright, Zesty, and Low-Carb
These Keto Lemon Donuts bring sunny flavor to your morning without the sugar crash. They’re soft, lightly sweet, and full of fresh citrus aroma. If you’re craving a bakery-style treat on a low-carb plan, this recipe hits the spot and still keeps things simple.
You can bake a batch in under 30 minutes, and the lemon glaze takes them over the top. Perfect for brunch, meal prep, or a weekday pick-me-up.
Ingredients
Method
- Prep the pan and oven: Preheat the oven to 350°F (175°C). Lightly grease a 6- or 12-cavity donut pan with butter or coconut oil.
- Mix dry ingredients: In a large bowl, whisk 1 1/2 cups almond flour, 2 tablespoons coconut flour, 1 1/2 teaspoons baking powder, 1/4 teaspoon salt, and 1/3 cup granulated keto sweetener until no lumps remain.
- Combine wet ingredients: In the same bowl, whisk in 3 large eggs, 3 tablespoons melted butter, 1/4 cup Greek yogurt or sour cream, 2–3 tablespoons unsweetened almond milk, 1 tablespoon lemon zest, 2 tablespoons fresh lemon juice, and 1 teaspoon vanilla. Stir until smooth and thick, like muffin batter.
- Adjust consistency: If the batter is too thick to pipe, add 1 more tablespoon almond milk. The batter should be scoopable, not runny.
- Fill the pan: Spoon or pipe the batter into the donut cavities, filling each about 3/4 full. Smooth the tops with a spatula.
- Bake: Bake for 14–17 minutes, until the donuts are set, lightly golden at the edges, and a toothpick comes out clean. Do not overbake.
- Cool: Let donuts cool in the pan for 5 minutes, then transfer to a rack to cool completely before glazing. They firm up as they cool.
- Make the glaze: In a small bowl, whisk 3/4 cup powdered keto sweetener with 2–3 tablespoons lemon juice and 1–2 teaspoons almond milk until smooth and pourable. Add extra lemon zest if you like.
- Glaze the donuts: Dip the tops of cooled donuts into the glaze or spoon it over. Let them sit for 10–15 minutes to set.
- Serve: Enjoy fresh, or chill for 15 minutes for a firmer glaze and enhanced lemon flavor.
Why This Recipe Works
These donuts use a blend of almond and coconut flour for a tender crumb that isn’t dense or dry. Lemon zest and juice add bright flavor without extra carbs.
A touch of Greek yogurt or sour cream keeps the batter moist and helps them bake up fluffy. The quick glaze sets beautifully and gives that classic donut finish. Everything mixes in one bowl, so cleanup stays easy.
What You’ll Need
- Almond flour (fine blanched) – base for structure
- Coconut flour – adds lightness and absorbs moisture
- Baking powder – helps them rise
- Salt – enhances flavor
- Granulated keto sweetener (erythritol or allulose) – for the batter
- Eggs – room temperature
- Unsalted butter, melted (or coconut oil) – for richness
- Greek yogurt or sour cream – keeps donuts tender
- Unsweetened almond milk – to thin the batter slightly
- Fresh lemon zest – big flavor with little carb impact
- Fresh lemon juice – bright acidity
- Vanilla extract – rounds out the citrus
For the Lemon Glaze:
- Powdered keto sweetener – erythritol or allulose, powdered
- Fresh lemon juice – for bold flavor
- Almond milk – to reach drizzling consistency
- Lemon zest (optional) – extra zing
Equipment:
- Donut pan (nonstick)
- Mixing bowl and whisk
- Zester or microplane
- Piping bag or zip-top bag (optional for neat filling)
Step-by-Step Instructions
- Prep the pan and oven: Preheat the oven to 350°F (175°C).
Lightly grease a 6- or 12-cavity donut pan with butter or coconut oil.
- Mix dry ingredients: In a large bowl, whisk 1 1/2 cups almond flour, 2 tablespoons coconut flour, 1 1/2 teaspoons baking powder, 1/4 teaspoon salt, and 1/3 cup granulated keto sweetener until no lumps remain.
- Combine wet ingredients: In the same bowl, whisk in 3 large eggs, 3 tablespoons melted butter, 1/4 cup Greek yogurt or sour cream, 2–3 tablespoons unsweetened almond milk, 1 tablespoon lemon zest, 2 tablespoons fresh lemon juice, and 1 teaspoon vanilla. Stir until smooth and thick, like muffin batter.
- Adjust consistency: If the batter is too thick to pipe, add 1 more tablespoon almond milk. The batter should be scoopable, not runny.
- Fill the pan: Spoon or pipe the batter into the donut cavities, filling each about 3/4 full.
Smooth the tops with a spatula.
- Bake: Bake for 14–17 minutes, until the donuts are set, lightly golden at the edges, and a toothpick comes out clean. Do not overbake.
- Cool: Let donuts cool in the pan for 5 minutes, then transfer to a rack to cool completely before glazing. They firm up as they cool.
- Make the glaze: In a small bowl, whisk 3/4 cup powdered keto sweetener with 2–3 tablespoons lemon juice and 1–2 teaspoons almond milk until smooth and pourable.
Add extra lemon zest if you like.
- Glaze the donuts: Dip the tops of cooled donuts into the glaze or spoon it over. Let them sit for 10–15 minutes to set.
- Serve: Enjoy fresh, or chill for 15 minutes for a firmer glaze and enhanced lemon flavor.
Keeping It Fresh
– Room temperature: Store glazed donuts in an airtight container for up to 24 hours. Place parchment between layers. – Refrigerator: Keeps well for 4–5 days.
The texture stays moist, and the glaze holds. – Freezer: Freeze unglazed donuts up to 2 months. Thaw overnight in the fridge and glaze before serving. – Re-crisp: If they soften, warm in a 300°F (150°C) oven for 5–7 minutes, then cool and glaze.
Why This is Good for You
These donuts are low in net carbs and free of refined sugar, making them a smart fit for a keto or lower-carb lifestyle. Almond flour brings healthy fats and a bit of protein, which can help keep you satisfied.
Lemon adds brightness and a small amount of vitamin C without adding much to the carb count. Using keto sweeteners helps manage blood sugar spikes while still tasting like a treat.
Common Mistakes to Avoid
- Overbaking: Almond and coconut flours dry out fast. Pull the donuts when the centers are just set.
- Swapping flours 1:1: Coconut flour is highly absorbent.
Stick to the blend listed to avoid a crumbly donut.
- Glazing while warm: Warm donuts melt the glaze and make it run. Cool completely first.
- Using coarse almond meal: This can lead to gritty texture. Choose fine blanched almond flour.
- Too much lemon juice: Extra liquid thins the batter and can prevent proper rise.
Balance with zest for stronger flavor.
Recipe Variations
- Poppy Seed Lemon: Stir in 1 tablespoon poppy seeds for a bakery-style twist.
- Blueberry Lemon: Fold in 1/3 cup fresh blueberries. Toss them with a teaspoon of almond flour to prevent sinking.
- Vanilla Bean Glaze: Add 1/2 teaspoon vanilla bean paste to the glaze for a creamy, fragrant finish.
- Lemon Coconut: Swap almond milk with coconut milk and sprinkle toasted coconut over the glaze.
- Protein Boost: Replace 2 tablespoons almond flour with 2 tablespoons unflavored whey isolate for extra protein and a lighter crumb.
- Meyer Lemon: Use Meyer lemon for a slightly sweeter, floral note.
Can I Make These Without a Donut Pan?
Yes. Spoon the batter into a lined muffin pan and bake 16–18 minutes for donut muffins.
You’ll get the same flavor and a similar crumb.
Which Sweetener Works Best?
Powdered allulose gives a smooth glaze and soft bite. Erythritol works too but may set firmer and feel cooler on the tongue. For the batter, either granulated allulose or erythritol blends are fine.
How Many Carbs Are in Each Donut?
Exact numbers vary by brand and size, but a typical donut made as written has about 3–4g net carbs without glaze and about 4–5g with glaze.
Check your ingredient labels and calculate based on your products.
Can I Use Only Almond Flour?
You can, but the texture may be a bit heavier. If skipping coconut flour, reduce the almond milk slightly and watch the bake time to avoid drying.
What If I Don’t Eat Dairy?
Use coconut oil instead of butter and full-fat coconut yogurt in place of Greek yogurt. The flavor stays bright, and the donuts remain tender.
Wrapping Up
Keto Lemon Donuts are a simple way to enjoy a bright, bakery-style treat while staying low-carb.
The batter comes together fast, the glaze is zesty and clean, and the texture is soft with a pleasant crumb. Keep a batch in the fridge for busy mornings or weekend brunch, and customize with your favorite add-ins. When you want something sweet and sunny without the sugar, this recipe delivers.
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