This keto lemon poppy seed loaf is soft, moist, and full of bright lemon flavor. It’s one of those recipes that tastes like it came from a bakery, but it’s completely low carb and sugar free.
If you’ve been missing quick breads and loaves since going keto, this one is for you. It has that classic lemon poppy seed taste you remember, without all the carbs and sugar.
The batter comes together really fast with simple ingredients you probably already have. No complicated steps or fancy equipment needed.
And that lemon glaze on top? It takes this loaf from great to amazing. Just a simple mix of powdered erythritol, lemon juice, and butter drizzled over the top.
Whether you enjoy a slice with your morning coffee or as an afternoon snack, this loaf is a solid keto friendly option that the whole family can enjoy.
Why You’ll Love This Recipe
Bright and Zesty Flavor – The triple hit of fresh lemon juice and zest in both the loaf and glaze gives this bread an irresistible citrus punch.
Perfectly Moist Texture – The combo of sour cream and melted butter keeps every slice incredibly soft and tender without any dryness.
Tastes Like the Real Thing – You honestly would not know this is a keto loaf because it rivals any bakery-style lemon poppy seed bread.
Recipe Ingredients
For the Loaf
- 2 cups Almond Flour
- 1/3 cup Coconut Flour
- 3/4 cup Granulated Erythritol
- 2 tbsp Poppy Seeds
- 1 1/2 tsp Baking Powder
- 1/4 tsp Salt
- 4 large Eggs
- 1/3 cup Butter, melted
- 1/3 cup Sour Cream
- 2 tbsp Fresh Lemon Juice
- Zest of 2 Lemons
- 1 tsp Vanilla Extract
For the Lemon Glaze
- 1/3 cup Powdered Erythritol
- 2 tbsp Fresh Lemon Juice
- 1 tbsp Butter, melted
- Zest of 1 Lemon
How To Make
Step 1
Preheat the oven to 325F and line a 9×5 inch loaf pan with parchment paper. Whisk together the almond flour, coconut flour, granulated erythritol, poppy seeds, baking powder, and salt in a large bowl.
Step 2
In a separate bowl, whisk the eggs, melted butter, sour cream, lemon juice, lemon zest, and vanilla extract until smooth and combined.
Step 3
Pour the wet ingredients into the dry ingredients and stir until a smooth, thick batter forms. Let the batter rest for 3 minutes so the coconut flour absorbs the moisture.
Pour the batter into the prepared pan and smooth the top with a spatula. Tap the pan on the counter twice to release air bubbles.
Step 4
Bake for 50 to 55 minutes until the top is golden and a toothpick inserted into the center comes out clean. If the top browns too quickly, tent loosely with foil after 35 minutes.
Step 5
Let the loaf cool in the pan for 15 minutes, then lift out using the parchment and place on a wire rack to cool completely.
Step 6
Whisk together the powdered erythritol, lemon juice, melted butter, and lemon zest for the glaze. Drizzle generously over the cooled loaf, letting it drip down the sides. Let the glaze set for 10 minutes before slicing.
Tips
Let the Batter Rest Before Baking
That 3-minute rest isn’t just a suggestion. Coconut flour keeps absorbing liquid well after you mix it in, and if you skip the rest, the batter will be too loose when it goes into the oven.
After the rest, the batter should be noticeably thicker. If it still looks thin or runny, give it one more minute. A thick batter is what gives this loaf its structure since there’s no regular flour holding things together.
Use Room Temperature Eggs and Sour Cream
Cold eggs and cold sour cream will cause the melted butter to seize up into little solid clumps the second they touch. You’ll end up with a lumpy wet mixture that doesn’t blend smoothly into the dry ingredients.
Pull the eggs and sour cream out of the fridge about 30 minutes before you start. If you forget, put the eggs in a bowl of warm water for 10 minutes. It makes a big difference in how smooth the batter comes together.
Sift the Powdered Erythritol for the Glaze
Powdered erythritol tends to clump up, and those clumps don’t dissolve easily in just 2 tablespoons of lemon juice. If you skip sifting, the glaze will be gritty and won’t drizzle smoothly.
Push it through a fine mesh strainer before whisking it with the lemon juice and butter. You want a completely smooth glaze that flows off a spoon in a thin, even stream.
If it’s too thick after whisking, add half a teaspoon of lemon juice at a time until it reaches a drizzle-friendly consistency.
More Recipes
- Keto Lemon Blueberry Pound Cake
- Low Carb Lemon Bars
- Low Carb Ricotta Lemon Cake
- Keto Marble Pound Cake
- Keto Zucchini Bread
Frequently Asked Questions
Can I use monk fruit sweetener instead of erythritol?
Yes, monk fruit sweetener works great as a substitute. If your monk fruit blend is already measured 1:1 like sugar, you can use the same amounts called for in the recipe – both for the loaf and the glaze.
Just double-check the label, because some monk fruit products are more concentrated and you may need less. The flavor will be very similar, and the texture of the loaf won’t be affected.
Keto Lemon Poppy Seed Loaf
Ingredients
Equipment
Method
- Preheat the oven to 325F and line a 9x5 inch loaf pan with parchment paper. Whisk together the almond flour, coconut flour, granulated erythritol, poppy seeds, baking powder, and salt in a large bowl.
- In a separate bowl, whisk the eggs, melted butter, sour cream, lemon juice, lemon zest, and vanilla extract until smooth and combined.
- Pour the wet ingredients into the dry ingredients and stir until a smooth, thick batter forms. Let the batter rest for 3 minutes so the coconut flour absorbs the moisture. Pour the batter into the prepared pan and smooth the top with a spatula. Tap the pan on the counter twice to release air bubbles.
- Bake for 50 to 55 minutes until the top is golden and a toothpick inserted into the center comes out clean. If the top browns too quickly, tent loosely with foil after 35 minutes.
- Let the loaf cool in the pan for 15 minutes, then lift out using the parchment and place on a wire rack to cool completely.
- Whisk together the powdered erythritol, lemon juice, melted butter, and lemon zest for the glaze. Drizzle generously over the cooled loaf, letting it drip down the sides. Let the glaze set for 10 minutes before slicing.