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Keto Lemon Poppy Seed Cake

A delicious lemon poppy seed bundt cake with lemon glaze. A perfect breakfast or tea time treat. Low carb and gluten free.
A slice of low carb lemon poppyseed cake on a white plate with a plaid napkin

Lemon poppy seed cake is a classic dessert and perfect for Spring. This bundt cake recipe is low carb and grain free so it fits in well with your healthy keto diet. Now with an instructional video!

Keto Lemon Poppy Seed Cake on a white cake stand with raspberries

I first made this keto lemon poppy seed cake WAYYYYY back in 2013. It was delicious back then and has stood the test of time, with many copycat recipes. So I decided to give it a shiny new update, with brand new photo and a how-to video. Ready for one of the most delicious sugar-free cakes you will ever eat?

What do you think of when you think of lemon poppy seed muffins, or any poppyseed recipe really? I can’t help it, I instantly think of the episode of Seinfeld where Elaine tests positive for opium after eating poppy seed muffins.

In typical Seinfeld fashion, the scenario seems utterly ludicrous and you think it can’t possibly be true. But apparently it is actually possible to test for opiates from eating a few poppy seed-containing baked goods.

And people have been fired, suspended and denied employment because of it.  So I suppose this low carb lemon poppy seed bundt cake recipe ought to come with a warning.  Do not eat prior to taking a drug test!  If your employment requires regular, surprise drug tests…well, I can’t help you there.

How to Make Keto Lemon Poppy Seed Cake

I love bundt pans for their instant elegance. Bundt cakes hardly need any decoration at all, they look so perfect as is. A little drizzle of glaze or a sprinkling of powdered sweetener is all you need.

But it turns out that I have a very similar recipe in The Everyday Ketogenic Kitchen. I did that one as a Lemon Poppy Seed Bread and you could easily bake this recipe in a loaf pan if you prefer. They really take about the same time to bake.

Drizzling lemon glaze over lemon poppy seed cake

Almond flour is your best choice for a big bundt cake like this one, as it produces the finest results. You always want to choose finely ground blanched almond flour for keto cakes.

Why protein powder? I get this question all the time so I will just head it off at the pass and answer it here. Because gluten is a protein and in its absence, another dry protein helps keto baked goods rise and hold their shape. You can use egg white protein if you prefer.

If you really are in danger of having a drug test thrust upon you, try substituting chia seeds in place of the poppy seeds. The carb count will be roughly the same.

Lemon zest is vital to the flavor. The freshly grated zest of a lemon provides so much of that tart-sweet lemony flavor, so don’t skip it!

Vanilla extract and lemon extract together. Lemon extract can be a little harsh and have a bitter flavor, but it plays really nicely with vanilla, which tones it down a bit. I like to use both in this lemon poppy seed cake recipe.

A slice of low carb lemon poppyseed cake on a white plate with a plaid napkin

Room temperature ingredients! Remember to let your butter, eggs and water all come to room temp before proceeding. It defeats the purpose of creaming softened butter with sweetener, if you then add cold eggs. All your lovely butter will clump up again!

What about Lemon Poppy Seed Muffins? Yes, friends, you can absolutely make muffins with this recipe. Just divvy it up into your muffin cups, and try to use parchment or silicone liners. Your bake time will probably be about 25 minutes but start watching them at 20, just in case.

If you’re a lemon dessert lover, you are going to adore this low carb Lemon Poppy Seed Cake, I assure you. It’s tender and sweet, with a spectacular lemon flavor. What could be better?

The best low carb lemon poppy seed cake! A slice with a forkful taken out of it.

More Delicious Keto Lemon Recipes

Lemon is perfect for spring and Easter, and I’ve got quite a collection of low carb lemon recipes!

Lemon Sour Cream Pie

Lemon Blueberry Cake

Lemon Meringue Pie

Strawberry Lemonade Cake

Sugar Free Lemon Curd

Instant Pot Lemon Cheesecake

Lemon Ricotta Scones

A slice of low carb lemon poppyseed cake on a white plate with a plaid napkin
4.94 from 47 votes

Keto Lemon Poppy Seed Cake

Servings: 12 servings
Prep Time 25 minutes
Cook Time 50 minutes
Total Time 1 hour 15 minutes
A delicious lemon poppy seed bundt cake with lemon glaze. A perfect breakfast or tea time treat. Low carb and gluten free.

Ingredients
 

Cake:

Glaze:

Instructions

  • For the cake, preheat the oven to 325F and grease a bundt pan very well.
  • In a medium bowl, whisk together the almond flour, protein powder, poppy seeds, baking powder, and salt. Set aside.
  • In a large bowl, beat the butter with the sweetener until well combined. Beat in the eggs, scraping down the beaters and the sides of the bowl as needed. Beat in the lemon zest, lemon extract, and vanilla extract. 
  • Beat half of the almond mixture in, then beat in the water. Add the remaining flour mixture and beat until just combined. Spread the batter into the prepared pan and smooth the top with an offset spatula.
  • Bake 45 to 50 minutes, or until top is deep golden brown and a tester inserted in the center comes out clean. Let cool in pan for 30 minutes, then flip out onto a wire rack to cool completely.
  • For the glaze, whisk together the powdered Swerve and lemon juice until smooth. If too thin, add a bit more powdered Swerve. If too thick, at a bit more liquid (water or lemon juice).
  • Drizzle glaze over the cooled cake.

Notes

Serves 12. Each serving has a total of 7.6 g of carbs and 3.5 g of fiber. Total NET CARBS = 4.1 g.
Substitution: You can replace the poppyseeds with chia seeds, if you prefer. 

Nutrition

Serving: 1serving = 1/12th of cake | Calories: 273kcal | Carbohydrates: 7.5g | Protein: 10g | Fat: 23.2g | Fiber: 3.5g
I’d love to know your thoughts, leave your rating below!

 

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Nutritional Disclaimer

Please note that I am not a medical or nutritional professional. I am simply recounting and sharing my own experiences on this blog. Nothing I express here should be taken as medical advice and you should consult with your doctor before starting any diet or exercise program. I provide nutritional information for my recipes simply as a courtesy to my readers. It is calculated using MacGourmet software and I remove erythritol from the final carb count and net carb count, as it does not affect my own blood glucose levels. I do my best to be as accurate as possible but you should independently calculate nutritional information on your own before relying on them. I expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website.

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242 Comments

  1. Paola Lopez says:

    Hello,
    Can I substitute the lemon extract for lemon juice?
    Thank you.

  2. Elizabeth Barnette says:

    I’m allergic to almonds and would like to use coconut flour in keto recipes. Would that work?

    1. You cannot simply swap these flours for one another. Please review my articles on how to bake with almond flour and how to bake with coconut flour. Then use the search box and type in coconut flour to find specific coconut flour recipes. https://alldayidreamaboutfood.com/faq/

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