Gluten Free Lemon Poppy Seed Loaf

This Gluten Free Lemon Poppy Seed Loaf is a delicious twist on a classic lemon bread. The batter is divided, with finely ground poppy seeds added to one portion before the two batters are gently swirled together to create a beautiful marble pattern in every slice. Finished with a bright lemon glaze, this tender loaf is soft, buttery, and filled with fresh citrus flavor. The ground poppy seeds add a subtle, nutty taste that makes this loaf truly special.

Recipe Ingredient Notes

Gluten Free Flour: I have tested this Gluten Free Lemon Poppy Seed Loaf with King Arthur Measure for Measure and Bob's Red Mill 1-1. Honestly, both turned out beautifully with a soft, delicate crumb. The version made with King Arthur stayed just a bit more moist and tender.

Whipped Cream: Instead of butter, this lemon poppy seed loaf has whipped cream folded right into the batter. The whipped cream gives the cake an incredibly light, airy texture while still adding richness and moisture. As the cake bakes, all those tiny air bubbles from the whipped cream help create a soft, delicate crumb that stays tender for days. It’s one of those old-school baking methods that feels a little magical - simple ingredients, but an unbelievably plush cake. This cake will only work with REAL whipped cream. Frozen whipped cream or dairy-free whipped cream can not be used here.

Oil: Adding a small amount of vegetable oil helped keep the cake extra soft and tender for longer. The oil gives the crumb a little added insurance against drying out without making the cake feel heavy or greasy.

Lemon Pudding: Instant pudding mix helps with the texture, moisture, and lemon flavor of this gluten free lemon poppy seed loaf.  It also helps to extend the shelf life. Can be substituted with equal amounts of cornstarch or gluten free flour.

Gluten Free Lemon Poppy Seed Loaf

This Gluten Free Lemon Poppy Seed Loaf comes together in no time. Like for all my gluten free quick bread recipes, I use a 8.4” x 4.5” x 4.1” Pullman loaf pan here.

1. Step 1: Spray a 8.4” x 4.5” x 4.1” Pullman loaf pan with nonstick cooking spray. Line it with parchment paper and set aside until needed.
2. Step 2: Preheat the oven to 350F.
3. Step 3: Pulse the poppy seeds briefly in a spice grinder or food processor until they are lightly cracked and fragrant, about 5–10 seconds. Do not grind them into a powder. Breaking them up helps release their nutty flavor and allows them to blend more evenly into the batter. Set aside until needed.

4. Step 4:  In a small bowl, combine the gluten free flour with the instant lemon pudding mix, baking powder and kosher salt. Stir or whisk together until combined. Set aside until needed.

5. Step 5: Add the cold heavy cream to the bowl of the stand mixer fitted with the whisk attachment.  Whisk at a medium speed until stiff peaks have formed. This takes around 2-3 minutes depending on how powerful your mixer is.
6. Step 6: Transfer the whipped cream to a small bowl and place it in the fridge.

7. Step 7: Don’t bother cleaning the bowl or the whisk attachment after whipping the cream; any leftover cream is perfectly fine in the batter.
8. Step 8: Add the granulated sugar to the bowl and zest the lemon directly into the sugar, being careful to avoid the white pith underneath the peel, which can add a bitter flavor.

9. Step 9: Using your fingers or the back of a spoon, rub the zest into the sugar. This will bring out the oils and lemon flavor of the zest without adding lemon extract.

10. Step 10: Next, add the room temperature eggs, vanilla extract, and oil to the mixing bowl.

11. Step 11: Whisk the ingredients together until light in color and fully combined, about 2-3 minutes.

12. Step 12:  Next, add the dry ingredients to the egg mixture. Mix together for about 30 seconds until a cake batter forms. Make sure to use a flexible spatula to make sure there are no traces of flour at the bottom of the mixing bowl.

13. Step 13: Fold the whipped cream into the batter in thirds. The first addition helps lighten the base, making it easier to incorporate the remaining whipped cream without deflating the mixture. Gently fold until smooth, airy, and fully combined.

14. Step 14: The gluten free lemon poppy seed loaf batter should look light and airy, with a smooth texture.

15. Step 15: Next divide the lemon loaf batter between two bowls. This does not have to be precise, just eyeball it.
16. Step 16: With a flexible spatula, gently fold the ground poppy seeds into one half of the lemon loaf batter. Make sure the poppy seeds are evenly distributed throughout the batter and that no pockets or clumps remain.

17. Step 17: Using a large cookie scoop, add alternating scoops of lemon and poppy seed batter to the prepared loaf pan, creating a checkerboard pattern. Repeat with the remaining batter to create a second layer, making sure to alternate the batters so the poppy seed batter finishes on top of the lemon batter.

18. Step 18: With a butter knife or a fork, carefully swirl both flavors together to give it a marble effect. Don't overdo it.

19. Step 19: Place the gluten free lemon poppy seed loaf in the preheated oven and bake at 350F for 55 - 60 minutes. The top of the cake will be golden brown, and a cake tester or wooden toothpick inserted in the center of the cake comes out clean (a few moist crumbs are okay). If using a digital thermometer, the internal temperature should be around 200F.
20. Step 20: Remove the loaf pan from the oven and allow the cake to cool for 10 minutes in the pan before transferring it to a cooling rack to cool completely before icing.

Storing & Freezing

Store the glazed lemon poppy seed loaf in an airtight container at room temperature for up to 3-5 days or in the refrigerator for up to 5 days. If refrigerated, let it come to room temperature before serving for the best texture. Keep in mind that the glaze may be come tacky.

For best results, freeze the loaf without the glaze. Wrap the completely cooled loaf tightly in plastic wrap, then place it in a freezer-safe bag or container and freeze for up to 2 months. Thaw overnight in the refrigerator or at room temperature, then add the glaze before serving. If you need to freeze leftover glazed slices, place them in a single layer on a sheet tray until the glaze is firm, then wrap and freeze.

Note about Salt in my Recipes

I use Diamond Kosher Crystal Salt in all of my recipes unless otherwise stated. If use use a different brand or kind of salt in your kitchen please adjust accordingly since some salts can be saltier. If you use Morton’s Kosher Salt please be aware that their salt granules are smaller in size, denser, and crunchier and twice as salty.

Baking in grams

I share my recipes in grams and by weight since baking by weight is the most accurate way to bake. Digital Scales are very affordable and easy to use. You can purchase them on Amazon for less than a set of measuring cups. For small amounts under 10 grams, I like to use this Precision Pocket Scale. Measuring cups are very inaccurate which can cause significant errors when it comes to gluten-free baking or baking in general. Especially since I bake with gluten-free flours which weigh differently than “regular” flours. I do provide some ingredients like spices and leavening agents in measuring spoons. To learn more about Baking with a digital scale, make sure to check out my post about Baking by weight.

Note about Ovens and Oven Temperatures

All my recipes are tested and developed with a conventional oven. I always bake my baked goods on the rack placed in the MIDDLE of my oven. This way the heat coming from the bottom will not burn my baked goods.

If you are baking with convection (fan-forced), please adjust the recipes accordingly. Convection oven can cause baked goods to dry out quickly and still be raw inside. Since takes at least 15-20 minutes for a standard American Oven to be fully preheated. I highly recommend investing in an Oven Thermometer.

Substitutions and Modifications

Any dietary or ingredient modifications/substitutions to this recipe may alter the end result in appearance and taste. I test my recipes several times as published in this post and The Gluten Free Austrian Blog is not responsible for the outcome of any recipe you find on our website.