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Keto Lemon Blueberry Coffee Cake

Keto Lemon Blueberry Coffee Cake with Crumb Topping is gluten free and sugar free!

Keto Lemon Blueberry Coffee Cake with Crumble Topping

Lately I’m making a lot of recipes from my childhood.  I’m sure it’s because I have my elderly Mom living in the house now. I know time is not on her side and the nostalgia is setting in big time!

In the kitchen that I grew up in you could count on 2 things:  There would always be coffee and there was always a coffee cake of some kind (Mom called it Kaffee Kuchen).

The coffee cake that I grew up with usually had 3 things:

  • Bottom layer (not too sweet)
  • a fruit layer of whatever was in season
  • a crumble or struesel topping

I lived in a neighborhood of people ‘from the old country’. Doors were never locked and neighbors walked in at random.  They would be presented with a cup of strong hot coffee and a slice of coffee cake.

Coffee with Low Carb Lemon Blueberry Coffeecake with a crumb topping

We had fruit trees and so the freezer was always packed with plums and apples and this meant that Pflaumenkuchen and  Apfelkuchen were made year round. But when that was gone, the coffee cake was made without fruit and honestly it was quite good too.  I’ll do a low carb version in an upcoming recipe.

I really wanted to try making a keto version of coffee cake and I did have some blueberries in my freezer, so blueberries it was going to be! 

I also love the combination of lemon and blueberries so that was the taste I was going for.

How do you make a low carb or keto version of coffee cake?

For the bottom layer of the lemon blueberry coffee cake I used a combination of almond flour and coconut flour held together with eggs and butter.  I used zero carb lemon crystals to get the lemon flavor.

My Mom would have layered the fruit on top but I was worried about the moistness so I folded in blueberries, which are naturally low in carbs.  I needn’t have worried, the cake is so moist!  Just layer the fruit on top.  Use lower carb fruits like blueberries, blackberries or raspberries.

My Mom liked using a brown sugar crumb topping on her coffee cakes, so to achieve that I used Sukrin brown sugar replacement.

Keto Lemon Blueberry Coffee Cake is moist and delicious!

Ingredients list for Keto Lemon Blueberry Coffee Cake:

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Tools required for Keto Low Carb Lemon Blueberry Coffee Cake with Crumble Topping

I am so happy with how this low carb coffee cake turned out!  I had 2 people tell me that it tasted like something they would have bought at Starbucks!

If you would like to try a streusel top muffin, then check out these Keto strawberry muffins!

Printable Recipe Card for Keto Lemon Blueberry Coffee Cake


Yield: 12 slices

Keto Lemon Blueberry Coffee Cake

Keto Lemon Blueberry Coffee Cake

An easy and moist Low Carb version of the coffee cake that I grew up with. Serve this Keto Lemon Blueberry coffee cake with a steaming cup of hot coffee.

Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes


  • Bottom Layer:
  • 2 tbsp softened butter
  • 4 tbsp cream cheese
  • 1/3 cup of granular sweetener
  • 4 eggs
  • 1 tsp vanilla
  • 3 packets True Lemon crystals
  • 1/2 cup heavy cream (or use unsweetened almond milk, yogurt or sour cream)
  • 1 cup almond flour
  • 1/2 cup coconut flour
  • 1 tsp baking powder
  • pinch of salt
  • 1 cup blueberries
  • -------------------------------------------------------------------------
  • Crumble Topping:
  • 1 cup almond flour
  • 1/4 cup coconut flour
  • 1/4 cup brown sugar replacement
  • 4 tbsp butter
  • 1-2 teaspoons cinnamon


Bottom layer

  1. With a wooden spoon, cream together the butter, cream cheese and sweetener.
  2. Add eggs, vanilla, and cream
  3. Mix on low with electric mixer
  4. Add in True Lemon, almond flour, coconut flour, baking powder and salt.
  5. Mix on low with mixer until well combined.
  6. Gently fold in blueberries OR NOT (see step 7)
  7. Divide batter into 2 silicone loaf pans. Add 1/2 cup blueberries on top of each loaf (if you didn't mix it into the batter)
  8. Preheat over to 350 and proceed to make topping

Crumble Topping

  1. Combine the butter, brown sugar replacement, flours and cinnamon into bowl
  2. I like to work the ingredients into crumbles with my hands like my Mom did. BUT, the electric mixer also does a good job!
  3. Divide the crumbs evenly over top of the 2 loaves

Bake at 350 for about 20 minutes. Cover the loaves with a loose layer of foil so they don't get too brown. Bake another 10 minutes or until a toothpick inserted in center comes out clean.

Allow to cool for 15 minutes before trying to remove from the loaf pan. I use a straight edge spatula and the loaf pops out nice and clean from the silicone pan!

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Nutrition Information:



Serving Size:

1 slice

Amount Per Serving:Calories: 169 Total Fat: 14g Saturated Fat: 7g Unsaturated Fat: 2g Carbohydrates: 7g Fiber: 3g Sugar: 2g Protein: 5g
Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar.

Save these Keto Lemon Blueberry Coffee Cake Loaves to Pinterest!


Keto Low Carb Lemon Blueberry Coffee Cake is pudding moist and tastes like Starbucks! Add a mug of coffee and you are all set!

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2 Responses to Keto Lemon Blueberry Coffee Cake

  1. Fiona says:

    In the UK, we call this type of almond cake ‘Frangipane’.
    I made it today, substituting raspberries for the blueberries, Lemon extract for the true lemon, and omitted the cinnamon (Just don’t like it!).
    It has worked perfectly – I only had a large loaf tin, so baked all the mix in one tin. It just took a while longer at a slightly lower temp after the first 20 mins.
    I love it. Thanks for sharing!

    • KetoWoman says:

      I’m glad the lemon extract worked out, I know that True Lemon is not available everywhere. I’ve also remade this recipe as Cranberry Muffins, just haven’t had the time to post the recipe on the blog yet. Coming soon! Thanks for stopping by!

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