Looking for a spectacular low carb cake for spring? Look no further than this gorgeous keto Coconut Lemon Curd Cake. Guest post by Kim of Low Carb Maven.
Spring is in full swing in Southern California and I couldn’t be happier. At the moment my rose bushes are ready to bloom and the neighbor’s citrus trees are full of blossoms. I don’t know if you’ve smelled orange or lemon blossoms before, but they have an amazingly strong sweet-floral scent – one that accompanies me on my evening walks this time of year. It often brings to mind the song “Lemon Tree” by Peter, Paul, and Mary, a favorite of my father’s when I was a child.
I love all things lemon, especially great low carb lemon bars or Carolyn’s lemon sour cream pie. But as much as I love lemon, I love coconut, too. I can’t think of a better way to celebrate Spring than with my two favorites flavors in this beautiful low carb coconut lemon curd cake.
We low carbers are pretty lucky. Our low carb ingredients are not only nutritious, they taste great. And, the variety of low carb recipes and sugar free desserts available on the internet nowadays astounds me. Part of that reason is we’ve discovered that combining our low carb products results in the best possible texture and flavor – like in this coconut cake.
I combined Honeyville almond flour for a nice moist crumb with Bob’s Red Mill coconut flour with its capacity to absorb moisture and increase yield. This time I skipped the whey protein powder, opting to use more coconut flour for a stronger coconut flavor. It’s scrumptious.
Although this low carb coconut cake is filled with a tangy sugar free lemon curd, I could have chosen to fill it with almost anything. A vanilla, chocolate, or coconut pastry cream would make a great filling for the cake or even a flavored whipped cream. A few good basic recipes can be combined in endless ways – that’s the excitement factor for me!
If you love to bake, then this recipe is for you. The cake consists of three easy recipes: the lemon curd, the coconut cake, and the stabilized whipped cream frosting. Make it easy on yourself and prepare the lemon curd and cake several days in advance and refrigerate. Assemble and frost the cake the day before needed so the lemon curd will have time to set up. Drizzle the lemon curd on the top before serving. Raspberries make the perfect finishing touch.
This is a 6-inch diameter cake, but even so, it’s 4 inches high and easily serves 12. It can easily be baked in 3, 8-inch round pans for a shorter but larger diameter cake. Baking time will be different, so I suggest you follow the baking time stated in one of Carolyn’s other recipes like her delicious looking Strawberry Lemonade Cake. Enjoy!
Kim develops recipes in her southern California kitchen and blogs at Low Carb Maven where she shares low carb keto recipes with a gourmet vibe. Follow her on Facebook, Pinterest, and Instagram.
Coconut Lemon Curd Cake
Ingredients
Lemon Curd:
- ½ cup fresh lemon juice
- ½ cup granular Swerve Sweetener
- 3 large eggs
- 3 large egg yolks
- 3 tbsp. butter cut into 3 pieces
- 2 teaspoon arrowroot powder or cornstarch
- Zest from the lemons
Coconut Cake:
- 4 oz unsalted butter softened
- 4 oz cream cheese softened
- ½ cup granular Swerve Sweetener
- 1 teaspoon coconut extract
- ½ teaspoon vanilla extract
- 1 cup almond flour
- 1 cup coconut flour
- 2 teaspoon baking powder
- ½ teaspoon salt
- ¼ teaspoon xanthan gum
- 4 large eggs cold
- 3 large egg whites cold
- ⅔ cup almond milk cold
Whipped Cream Frosting:
- 1 ⅓ cup heavy whipping cream
- ⅓ cup confectioners Swerve Sweetener
- ½ teaspoon vanilla extract
- 1 teaspoon coconut extract
- ⅛ teaspoon xanthan gum
Garnish:
- ½ cup flaked coconut for the outside of the cake
- Raspberries optional
Instructions
Lemon Curd:
- Mix the Swerve and arrowroot powder together in a small pot. Add the egg yolks and lemon zest, whole eggs, and lemon juice whisking thoroughly between each addition.
- Turn the heat to medium and whisk until the mixture just begins to thicken. Adjust the heat to medium-low and whisk briskly until the mixture thickens, all at once.
- Turn off the heat and continue whisking for 1 minute. Whisk in the butter. Strain the mixture into a clean bowl. Cool, cover with cling film and refrigerate overnight or up to 4 days.
Cake:
- Preheat oven to 350 degrees F and position rack to the lower third. Spray two 6 x 2 -inch round pans (or three 8x1-inch pans) with baking spray and line the bottoms with parchment.
- Add the first 5 ingredients to a medium bowl and cream until light and fluffy. Add the egg whites and beat again until light and fluffy. In a small bowl, add the remaining dry cake ingredients and whisk to combine and break up any lumps. Add ⅓ of the dry ingredients and beat until incorporated. Add two eggs and beat until light and fluffy. Scrape down the bowl and repeat the procedure ending with the final addition of the dry ingredients. Lastly, add the almond milk and beat, keeping a nice fluffy texture. Divide the batter between the prepared pans and spread with an offset spatula. Lift the pans a few inches off of the counter and drop 2-3 times to knock out any large air bubbles.
- Place pans in the oven and raise the temperature to 400 degrees F for 10 minutes, then back to 350 degrees for 20-30 minutes more. The cakes are done when firm to the touch but they still sound a little moist. (Cooking time will be less with three 8-inch pans.) Remove cakes from the oven and cover with a clean tea towel to cool completely. They will sink a bit in the middle. Wrap with cling film and refrigerate until needed.
To Assemble:
- Whip the heavy whipping cream with the sweetener and flavorings until almost stiff. Sprinkle the xanthan gum over the whipped cream and whip until very stiff and almost clumpy. Put ⅓ of the whipped cream into a pint ziploc bag and snip off ⅜ inch off the corner (or slide a large round open tip into the bag).
- Remove and reserve ¼ cup of lemon curd. Mix the remaining lemon curd to loosen it.
- For 6-inch pans: Slightly slice off the tops to even out the cakes and then slice each cake in half horizontally. Place one cake half on the serving plate and squeeze a ring or dam of whipped cream along the inside edge of the cake. Spread ⅓ of the lemon curd on the cake up to the dam. Top with another layer of cake, pressing lightly to level. Follow the same procedure and repeat. Top with the remaining cake layer.
- For 8-inch pans: Do the same as above except don’t slice the cakes in half. Spread ½ of the lemon curd on the bottom cake layer up to the whipped cream dam. Top with another layer of cake and follow the same procedure. Top with the remaining cake layer.
To Decorate:
- Frost the cake with the whipped cream. Using small handfuls, apply the flaked coconut to the sides of the cake. Stick 4-5 toothpicks into the top and carefully cover the cake in cling film. Refrigerate overnight.
- Before serving, remove the toothpicks and mix the remaining lemon curd with enough water (2-3 tbsp.) to make a spoonable (but not runny) mixture. Spoon the lemon curd around the top edge of the cake, encouraging it to drip down. Spoon the rest of the lemon curd over the top of the cake and spread gently with the spoon or an offset spatula. Cut and serve.
Sharon Hansen says
Hi Carolyn.
First I want to say how much your cookbooks and website recipes have changed my life. I NEVER was a baker before I found you – and now I own 6″ cake pans and a cake leveler!! So thank you for all your tips, hard work, and creativity that continue to inspire a league of us out here!
That said, I have to ask a question. Last weekend I made your Coconut Lemon Curd Cake for a friend’s birthday. The CAKE part was FABULOUS. The CURD part had a wonderful flavor, but was a bit runny when I filled the cake and some of the erythritol recrystallized after refrigeration, which was irritating because the flavor was soooooo good. But the worst part (for me) was the FROSTING. I made the frosting with Swerve – but that cooling sensation is SOOOOO prominent, the frosting tasted just awful to me. (My birthday guests were very polite and kept their comments to themselves.) I guess I just am one of those people who can’t take erythritol in large doses (although baked into the cake, I never noticed the sensation.) What sweetener can I use in a frosting that won’t produce the cooling effect? In your “THE ULTIMATE GUIDE TO KETO SWEETENERS”, you say that while erythritol and xylitol HAVE mouth cooling effects, allulose and bocha sweet don’t, but will the fact that they tend toward the “gooey” side of things be a deal breaker in a frosting that needs to hold its shape? Will “Liquid Stevia” (what Brand name?) really counteract erythritol’s mouth cooling? In what proportion would one add that? Oh, please help me!!!
Carolyn says
Hi Sharon… if you read this blog post, you will see that it’s not actually my recipe. I had a guest post by a friend when I was busy working on a book. So I did not create this recipe. And if you read my post about keto sweeteners, you will also see that many people do NOT experience the cooling sensation with Swerve, which means your guests may have enjoyed the cake more than you did. I don’t experience it at all and never have.
You could use some powdered BochaSweet or allulose in your frosting but I wouldn’t use it entirely or it may not hold its shape. Try doing 50/50.
Dr. Sharon A. Hansen says
Thank you, Carolyn, for your great suggestion. I’ll try powdered BochaSweet 50/50 with Swerve next time. 🙂
Carolyn says
Hope you like it better!
Suzanne says
This sounds delicious. Just as an FYI, grass fed gelatin powder works well in place of xanthan gum.
Kim says
This was fantastic! I made the cake batter portion only and made it into cupcakes. Baked for about 30 min. I used the French buttercream frosting recipe from Low Carb Maven’s site nand the combo was to die for!! This tastes like actual REAL cake! And the frosting was the best frotsting I’ve ever had. The picky family loves it!
Christina says
Can you sub the corstarch or arrow powder with something like xanthum gym or omit altogether?
Thanks!
Kathleen says
We love this cake!!! We are on the GAPS diet and this is our go-to cake. At a recent Jane Austen Birthday party for my teenage daughters, one of our guest could not stop commenting on how wonderful this cake was. “Love at first bite!” was the comment she made on our Instagram account photo of the girls with the cake. Thank you for these fantastic recipes. We always check out your site when preparing our dessert menus.
AivaLight says
I made the lemon curd and it’s very thick. Any ideas how to make it more thinner?
Thank you!
Carolyn says
So this isn’t my recipe, it’s a guest post. But if it’s too thick, it sounds like it got cooked a little too long. Different stovetops are hard to control for. I suggest a little more lemon juice and perhaps taking it off heat the minute it seems to thicken.
AivaLight says
Thank you!
It worked! I added a little bit lemon juice.
The cake is so tasty! it’s unbelievable that it’s possible to make such delicious dessert in low carb version!
Yazmin says
Random comment I know, but I love waiting to bake after othwrs have tried it and learn along with their adventures! Thank you for all the hard work and shared comments-they are appreciated! As an aside, my first thought when I saw this was “ooo, I have the perfect pretty 6″ plate for this!” Yay. ?
Christine says
This looks fabulous. Just made the lemon curd and it’s delicious! Love that it’s not too sweet! I’ll be baking he cake tomorrow and I’m wondering how long you wait before removing the cakes from the pans. I usually keep cakes in pans about 5 minutes but I’m wondering if these are more fragile. Thanks fir any guidance you can offer!
Kim | Low Carb Maven says
The cakes are pretty sturdy so they don’t soak with the lemon curd.
Noelia Feliciano says
Hello and thank you for all your hard work putting this together to share. Question: Do you include the raspberries in the nutritional facts?
Carolyn says
Since they are optional, I believe they aren’t included. Kim would say for sure.
Kim | Low Carb Maven says
Great question. No, the raspberries weren’t included in the nutritional info.
Denise says
Can you use Splenda or Stevia instead for the sugar replacement? if so how much?
Tom says
This turned out great for me. I only did two 8 inch layers, baked at 375 for ten minutes, than at 325 for about 15 minutes. To speed things up and simplify, I put the lemon curd in the freezer for an hour and the cake layers in the freezer for 30 minutes, after they had cooled on the counter for 30 minutes. I just spread the lemon curd between the cake layers and on top of the cake, then I put the whipped cream frosting over the lemon curd on the top. We don’t like coconut, so I subbed lemon extract and left off the flakes. Totally delicious and looks pretty close to the pics.
Stephanie Deal says
I made this yesterday for my Easter brunch today and it was really good!! I used my 9 inch pans and ended up with three very slim layer cakes but I watched them very carefully and they didn’t burn at all. I followed the recipe exactly and it turned out perfectly. YUM! The whipped cream frosting is super tasty and even my non low carb family members loved this cake. THX!
(I took some great photos of my cake — wish I could show them to you!)
Stephanie
Louise says
Not very happy with the directions….making 3 cakes 8″ was not good…they burned and were very, very small. I had to remake…I made only 2 x 8 ” cakes and placed them in the oven halfway not lower 3rd..I turned the oven to 400 from 350 just before I put them in, baked for 10 mins then lowered to 350 for 15 mins….cooked perfectly and they actually looked like cakes although they were only about 1.5 inches high….will assemble tomorrow…again, poor directions…need to be more exact…definitely did not look like the picture
Kim | Low Carb Maven says
Louise. I am sorry you weren’t happy with the directions. I used 2, 6-inch pans when making the recipe. Not wanting anyone to have to buy 6 inch pans when Carolyn has several cakes that call for using 3, 8 inch pans, I knew that the recipe could be baked following the instructions for one of Carolyn’s cakes, as stated in the post – just before the recipe. I will confer with Carolyn and see what she things and if I should leave the recipe as is or if I should delete the part about using three, 8-inch pans. I am sorry you had to remake. Not only is that frustrating, it’s a waste of money and ingredients. Thank you for your feedback. -Kim
Dee Gee says
Thanks so much for the wonderful recipe.
I’m curious, why the COLD eggs and milk? How will it change the structure of the cake? Thanks for the insight.
Kim | Low Carb Maven says
I always use cold eggs in my low carb recipes. The erythritol will make the butter cold as they are beaten together anyway so there is no need to leave the ingredients on the counter to warm up. The batter will be more stiff with cold ingredients and looser with warm ingredients. -Kim
May Dailey says
This cake looks wonderful but I don’t have Zantham gum can I do without it in this cake?
Vaughan Allentuck says
Yesssss Ditto the Zantham gum question
Kim | Low Carb Maven says
The xanthan gum helps the ingredients bind together and it helps enhance the texture. You may leave it out but it may slightly effect baking time. -Kim
Karen says
OMG YASS!! Perfect cake for Easter. =))
patricia says
This cake is beautiful and sounds delicious. My husbands favorite…..lemon! But we have to be dairy free. Any suggestions what I can use for the cream cheese? for the butter, will coconut oil work?
Thanks
Carolyn says
Coconut oil should work. For the cream cheese, you might consider Kite Hill almond milk cream cheese, it’s the best non-dairy one I’ve found. If not that, then do a little more coconut oil and perhaps add a little more liquid at the end to make your batter spreadable.