Gluten-Free Lemon Poppy Seed Cake (Grain-Free & Dairy-Free)

This Gluten-Free Lemon Poppy Seed Cake is moist with a soft crumb and plenty of fresh lemon flavor. The lemon adds freshness without being overly tart, while the poppy seeds add a subtle nutty flavor. Made with almond flour and coconut flour, this naturally grain-free and dairy-free cake has a texture of a light cake.

A simple fresh lemon glaze drizzled over the top adds refreshing zing and a touch of sweetness.

Recipe Highlights

• Moist and tender: A soft, moist crumb with just the right amount of richness.
• Fresh lemon flavor: Refreshing lemon flavor throughout.
• Lightly sweet: Lightly sweetened to complement the lemon without overpowering it. If you prefer sweeter cakes add an extra 1/4 cup of sugar.
• Gluten-free, grain-free and dairy-free: A delicious option for several dietary needs.

Key Ingredients and Modifications

Almond flour: Almond flour gives this cake its moist, tender crumb and subtle nuttiness. For the best texture, use blanched almond flour rather than almond meal.

Coconut flour: Coconut flour absorbs considerably more moisture than other gluten-free flours, so I don’t recommend substituting it with another flour in the same quantity.

Poppy seeds: Soaking the poppy seeds in hot dairy-free milk softens them and allows them to blend naturally into the cake while helping distribute their flavor throughout the batter.

Fresh lemon juice and zest: Both are important for the best lemon flavor. The zest provides concentrated lemon oils, while the juice adds freshness. Since you are using the zest, zest the lemon before juicing. Do not use bottled lemon juice, the flavor is not the same.

Sugar: Fine ground coconut sugar can be used for a mild caramel-like sweetness and darker color. You can also substitute it with blonde brown sugar, although the flavor and color of the cake will vary.

Extra virgin olive oil: Olive oil keeps the cake moist, but you can also use avocado oil.

Dairy-free milk: Use your favorite unsweetened dairy-free milk. It is used to soak the poppy seeds and helps keep the cake tender. For a dairy-free glaze, use melted vegan butter

Eggs: Eggs provide structure while helping create the soft, tender crumb. I don’t recommend substituting them in this recipe without testing the recipe again.

What Makes This Lemon Poppy Seed Cake Different?

Instead of relying on a traditional gluten-free flour blend, I used almond flour and coconut flour to create a naturally grain-free cake with a tender, moist texture without using xanthan gum.

Another difference is the soaked poppy seeds. Soaking them in hot dairy-free milk before adding them to the batter softens the seeds and helps them become part of the cake rather than simply sitting throughout it. It is a small extra step that makes a noticeable difference in the texture.

What Can Go Wrong?

The cake is too dry: Coconut flour is highly absorbent, so measuring it accurately is important. Don’t add extra coconut flour, even if the batter seems too thin. Once you mix the ingredients, allow the batter to rest for 15 minutes. This allows the moisture to be absorbed by the coconut flour.

The cake is dense: Be sure your baking soda is fresh and properly measured. Also, don’t overmix the batter once the wet and dry ingredients are combined.

The lemon flavor isn’t strong enough: Fresh lemon zest is especially important here. For the true lemon flavor, use both the juice and finely grated zest from a ripe but firm lemon.

The cake sticks to the pan: Line the pan with parchment paper, leaving enough overhang to lift the cooled cake out easily.

If the glaze is too thin: Add a little more powdered sugar until it reaches a consistency that drizzles slowly from a spoon. You can also add a little extra lemon zest over the glaze for a beautiful fresh-lemon finish.

Ways to Serve Lemon Poppy Seed Cake

Serve this lemon poppy seed cake for breakfast or an afternoon treat, or add fresh berries for a simple dessert. You can also skip the glaze, dust it lightly with powdered sugar and lemon zest.

Keeping Lemon Poppy Seed Cake Fresh

Store the cooled cake in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate for up to 5 days and bring to room temperature before serving.

More Gluten-Free Desserts to Try

Dairy-Free and Gluten-Free Maple Lemon Bars

Almond Flour Grain-Free Pistachio Cake

Gluten-Free Blueberry Pecan Breakfast Cake

Gluten-Free Rice Flour Pound Cake

Hi, I’m Kristina, a gluten-free recipe developer creating and testing recipes since 2012. Every recipe on this site is made in my kitchen and personally tested (with the help of my very honest family!).

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