Introduction to Keto Lemon Poppy Seed Cake
If you’re searching for a delightful dessert that aligns with your low-carb lifestyle, look no further than the Keto Lemon Poppy Seed Cake with Blackberry Buttercream. This cake is not only a treat for your taste buds but also brings a burst of zesty lemon flavor combined with the nutty crunch of poppy seeds. The creamy blackberry buttercream elevates this cake to a whole new level, making it a must-try for anyone who loves homemade desserts.
The beauty of this Keto cake lies in its simplicity. With almond flour as the base, it stays true to keto dietary needs while ensuring a moist and flavorful cake. Imagine inviting friends over for a gathering and serving this stunning dessert that’s both guilt-free and incredibly satisfying. It’s perfect for young professionals who love to cook but may be short on time.
As you slice into the cake, the inviting aroma of lemon fills the air, and the first bite reveals the delightful texture and flavor combination. This cake is not just a dessert; it’s a conversation starter, a centerpiece for your table, and a sweet reminder that you can enjoy delicious treats without compromising your health goals. So, preheat your oven and get ready to impress your friends and family with this scrumptious Keto Lemon Poppy Seed Cake!
Key Ingredients
When it comes to creating the perfect Keto Lemon Poppy Seed Cake with Blackberry Buttercream, each ingredient plays a crucial role in achieving that delightful balance of flavor and texture.
Almond Flour
Almond Flour (2 cups): This low-carb alternative to traditional flour provides a moist, nutty base for the cake while being gluten-free. It’s rich in healthy fats and protein, making it an excellent choice for a keto diet.
Poppy Seeds
Poppy Seeds (1/4 cup): These tiny seeds add a delightful crunch and a subtle nutty flavor to the cake. They also bring a beautiful visual appeal, making each slice of cake not only delicious but also eye-catching.
Erythritol
Erythritol (1/2 cup): A natural sugar substitute that sweetens the cake without the calories or blood sugar spikes associated with regular sugar. It’s perfect for maintaining a low-carb lifestyle while still satisfying your sweet tooth.
Unsalted Butter
Unsalted Butter (1/2 cup, softened): This ingredient adds richness and moisture to the cake, ensuring it remains soft and tender. Using unsalted butter allows you to control the overall saltiness of the dessert.
Eggs
Eggs (4 large): Eggs provide structure and stability to the cake while also enriching its flavor. They help bind the ingredients together, contributing to the cake’s moist texture.
Unsweetened Almond Milk
Unsweetened Almond Milk (1/2 cup): This dairy-free alternative keeps the cake moist while adding a subtle almond flavor. It’s low in calories and carbohydrates, making it a great addition to keto recipes.
Lemon Juice
Lemon Juice (1/4 cup): Freshly squeezed lemon juice brightens the cake with a zesty flavor that balances the sweetness. It’s essential for achieving that refreshing lemon taste.
Lemon Zest
Lemon Zest (1 tablespoon): The zest adds an intense lemon fragrance and flavor, enhancing the overall taste of the cake. It also contributes to the cake’s vibrant color.
Baking Powder & Baking Soda
Baking Powder (1 teaspoon) and Baking Soda (1/2 teaspoon): These leavening agents help the cake rise, resulting in a light and fluffy texture. They are essential for achieving the perfect crumb in your keto cake.
These key ingredients come together to create a deliciously moist and flavorful Keto Lemon Poppy Seed Cake, topped with a rich and creamy blackberry buttercream. Each bite is a delightful experience that fits perfectly into your low-carb lifestyle.

Why You’ll Love This Recipe
If you’re looking for a dessert that perfectly balances flavor and health, the Keto Lemon Poppy Seed Cake with Blackberry Buttercream is a must-try. This delightful cake is not only low in carbs but also bursting with bright, refreshing flavors that will have you coming back for more. Whether you’re hosting a gathering or treating yourself, this cake promises to impress.
A Guilt-Free Indulgence
One of the best things about this recipe is that it allows you to indulge without the guilt. With only 250 calories and just 1g of sugar per serving, this cake fits seamlessly into your keto lifestyle. Imagine enjoying a slice of moist lemon cake topped with creamy blackberry buttercream while knowing it aligns with your dietary goals.
Perfect for Any Occasion
Whether it’s a weekend brunch, a birthday celebration, or just a sweet treat after a long day, this cake is versatile enough for any occasion. Its stunning presentation and delightful taste make it the perfect dessert to share with friends and family. Plus, with easy preparation and baking times, you can whip this up even on a busy day.
A Flavorful Experience
The combination of zesty lemon, crunchy poppy seeds, and rich blackberry buttercream creates a flavor profile that is both unique and satisfying. Each bite is a burst of freshness, making it an unforgettable dessert that will leave you and your guests raving. Don’t just take our word for it; experience the joy of this recipe yourself and see why it’s quickly becoming a favorite among homemade food lovers.
Variations
Exploring variations of the Keto Lemon Poppy Seed Cake with Blackberry Buttercream can take your baking experience to new heights. With a few simple tweaks, you can create a unique dessert that suits your taste preferences or dietary needs.
Flavor Additions
One of the easiest ways to customize this cake is by adding flavor extracts. Consider incorporating a teaspoon of vanilla or almond extract into the batter for an extra layer of taste. You can also mix in a handful of fresh blueberries or raspberries for added fruitiness, which pairs beautifully with the lemon.
Different Frostings
While the blackberry buttercream is a delicious choice, feel free to experiment with other frostings. A cream cheese frosting or a simple whipped coconut cream can be fantastic alternatives. For a chocolate twist, consider adding unsweetened cocoa powder to the buttercream to create a chocolate blackberry frosting.
Alternative Sweeteners
If you’re not a fan of erythritol, you can substitute it with other keto-friendly sweeteners such as monk fruit or stevia. Just be sure to adjust the quantities according to the sweetness level of the alternative you choose. This flexibility allows you to enjoy a sweet treat while adhering to your dietary preferences.
These variations not only make the Keto Lemon Poppy Seed Cake with Blackberry Buttercream more versatile but also allow you to cater to different occasions or personal tastes. Try them out and discover your favorite twist on this delightful dessert!

Cooking Tips and Notes
Baking the perfect Keto Lemon Poppy Seed Cake with Blackberry Buttercream requires a few helpful tips to ensure success. Follow these notes to elevate your baking experience and achieve the best results.
Prepping Your Ingredients
Make sure all your ingredients are at room temperature, especially the unsalted butter and eggs. This helps create a smoother batter and ensures even mixing, which is crucial for the texture of the cake. Additionally, measuring the almond flour accurately is important to avoid a dense cake; consider spooning it into your measuring cup rather than scooping.
Baking Time and Temperature
Keep an eye on the baking time; ovens can vary. Start checking the cake around the 30-minute mark by inserting a toothpick in the center. If it comes out clean, the cake is ready to come out of the oven. Let it cool completely in the pan before transferring it to a wire rack to prevent it from breaking apart.
Frosting Tips
For the blackberry buttercream, ensure the butter is softened but not melted. This will help achieve a creamy consistency. If you find the frosting too thick, you can add a splash of almond milk until you reach your desired texture. Remember, the cake should be completely cool before frosting to prevent the buttercream from melting.
By following these tips, you’ll create a delightful Keto Lemon Poppy Seed Cake that everyone will love, all while sticking to your low-carb lifestyle.
Serving Suggestions
When it comes to enjoying your Keto Lemon Poppy Seed Cake with Blackberry Buttercream, the right serving suggestions can elevate the experience even further. Here are some delightful ideas to consider.
Pair With Fresh Berries
Serving slices of this moist cake with a side of fresh berries—such as strawberries, blueberries, or raspberries—adds a burst of color and flavor. The tartness of the berries complements the sweetness of the cake, creating a balanced dessert that’s visually appealing and delicious.
Accompany With Whipped Cream
For an extra touch of indulgence, consider adding a dollop of sugar-free whipped cream on top of each slice. This light and airy addition enhances the texture of the cake and brings a creamy element that pairs beautifully with the rich blackberry buttercream.
Create a Dessert Platter
If you’re hosting a gathering, serve the cake as part of a dessert platter. Include a variety of keto-friendly treats—such as chocolate-dipped strawberries, coconut macaroons, and mini cheesecakes—to offer your guests a range of flavors and textures. This not only makes for an impressive presentation but also caters to different preferences.
These serving suggestions not only enhance the enjoyment of the Keto Lemon Poppy Seed Cake but also allow you to showcase your baking skills in creative and appetizing ways. Enjoy experimenting with these ideas and impressing your family and friends!

Time Breakdown
Understanding the time commitment for making the Keto Lemon Poppy Seed Cake with Blackberry Buttercream can help you plan your baking session effectively.
Preparation
In just 15 minutes, you can gather all your ingredients, measure them out, and prepare the batter. This quick prep time makes it easy to fit this delicious cake into your busy schedule.
Cooking/Baking
Baking the cake takes about 30-35 minutes. This is the perfect opportunity to tidy up your kitchen or prepare any additional sides you might want to serve with the cake.
Total
Overall, you’ll need approximately 50 minutes from start to finish to create this delightful dessert. Keep in mind that allowing the cake to cool completely before frosting is crucial for the best results. Taking a little extra time here ensures your blackberry buttercream will sit beautifully on top!
Nutritional Facts
Understanding the nutritional profile of the Keto Lemon Poppy Seed Cake with Blackberry Buttercream can help you enjoy this dessert while staying mindful of your dietary goals.
Each serving contains approximately 250 calories, making it a guilt-free indulgence for dessert lovers. With only 1g of sugar and 6g of carbohydrates per slice, this cake is perfect for those following a low-carb or keto diet. It also offers 22g of healthy fats, which contribute to satiety and energy. Additionally, each slice provides 6g of protein and 3g of fiber, helping to keep you feeling full longer.
Overall, this cake is not only delicious but also aligns perfectly with your low-carb lifestyle, allowing you to indulge without compromising your health objectives.
FAQ based on “People Also Ask” section
Can I use another sweetener instead of erythritol?
Yes, you can substitute erythritol with other keto-friendly sweeteners such as monk fruit or stevia. Just remember to adjust the quantity based on the sweetness level of the alternative you choose, as they can vary significantly.
How long does the Keto Lemon Poppy Seed Cake stay fresh?
The cake can be stored in an airtight container in the refrigerator for up to a week. To maintain its freshness, make sure it’s completely cooled before wrapping or covering it. You can also freeze the cake for longer storage, just be sure to thaw it before serving.
Can I make this cake dairy-free?
Absolutely! To make the Keto Lemon Poppy Seed Cake dairy-free, simply replace the unsalted butter with a dairy-free alternative such as coconut oil or vegan butter. The unsweetened almond milk in the recipe is already dairy-free, making it a great option for those with lactose intolerance.
What can I serve with this cake?
This delicious cake pairs wonderfully with fresh berries, a dollop of sugar-free whipped cream, or even a cup of herbal tea. For a festive touch, consider serving it as part of a dessert platter alongside other keto-friendly treats. Each serving not only satisfies your sweet tooth but also aligns with your low-carb lifestyle.
Conclusion
In conclusion, the Keto Lemon Poppy Seed Cake with Blackberry Buttercream is a delightful dessert that perfectly balances flavor and health. This moist cake not only satisfies your sweet cravings but also aligns with your low-carb lifestyle, making it an ideal choice for those who want to indulge without the guilt.
With its vibrant lemon flavor and creamy blackberry frosting, this cake is sure to impress at any gathering or serve as a special treat for yourself. Plus, with simple ingredients and straightforward instructions, you can whip it up in no time, even on a busy day.
So why not give this recipe a try? Enjoy the satisfaction of creating a delicious dessert that everyone will love, and don’t forget to share your results with friends and family. Cook, save, share, and comment on your experience with this delightful keto-friendly cake!
Print
Keto Lemon Poppy Seed Cake with Blackberry Buttercream
- Total Time: 50 minutes
- Yield: 8 servings 1x
- Diet: Keto
Description
A delicious and moist Keto Lemon Poppy Seed Cake topped with a rich Blackberry Buttercream, perfect for a dessert that fits your low-carb lifestyle.
Ingredients
- 2 cups almond flour
- 1/4 cup poppy seeds
- 1/2 cup erythritol
- 1/2 cup unsalted butter, softened
- 4 large eggs
- 1/2 cup unsweetened almond milk
- 1/4 cup lemon juice
- 1 tablespoon lemon zest
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
Instructions
- Preheat your oven to 350°F (175°C).
- In a bowl, mix the almond flour, poppy seeds, erythritol, baking powder, and baking soda.
- In another bowl, beat the butter and eggs until smooth. Add the almond milk, lemon juice, and lemon zest.
- Combine wet and dry ingredients, mixing until well combined.
- Pour the batter into a greased cake pan and bake for 30-35 minutes.
- Let the cake cool before frosting.
- For the frosting, mix softened butter with blackberry puree and erythritol until creamy.
- Spread the blackberry buttercream over the cooled cake.
Notes
- Make sure the cake is completely cool before applying the frosting.
- This cake can be stored in an airtight container in the refrigerator for up to a week.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 250
- Sugar: 1g
- Sodium: 100mg
- Fat: 22g
- Saturated Fat: 10g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 3g
- Protein: 6g
- Cholesterol: 120mg










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