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pulling a slice of lemon raspberry cake out of the cake

Almond Lemon Raspberry Poppy Seed Cake

Gorgeous lemon raspberry cake made with fresh lemon juice and zest, raspberries, poppy seeds and a luscious lemon raspberry frosting. This lemon poppy seed cake is made gluten free thanks to almond flour and oat flour, and is easily made dairy free with siggi’s raspberry plant-based yogurt and vegan butter!

Course Cake, Dairy Free, Dessert, Gluten Free
Cuisine American
Keyword gluten free lemon raspberry cake, lemon poppy seed cake, lemon raspberry cake
Prep Time 1 hour
Cook Time 25 minutes
Total Time 1 hour 25 minutes
Servings 16 servings
Author Monique Volz of AmbitiousKitchen.com


  • Wet ingredients:
  • 4 eggs, at room temperature
  • 2/3 cup honey
  • 1 (5.3 ounce) container of raspberry or mixed berry plant-based siggi’s yogurt*
  • Zest from 2 large lemons
  • 1/3 cup fresh squeezed lemon juice
  • 2 teaspoons almond extract
  • Dry ingredients:
  • 2 3/4 cups packed blanched fine almond flour
  • 1 cup oat flour** (do not pack!)
  • 2 tablespoons poppyseeds
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • For the lemon raspberry frosting:
  • 1 ½ cups (12 ounces) butter or vegan buttery stick (such as Miyokos), at room temperature
  • 4-5 cups powdered sugar
  • 1 tablespoon fresh lemon juice
  • 2 teaspoons lemon zest
  • ½ cup raspberries (to make 1-2 tablespoons raspberry puree)
  • Optional: 1 tablespoon milk, if necessary
  • For the filling:
  • 6 ounces fresh raspberries, cut in half lengthwise
  • For the garnish:
  • 6 ounces fresh raspberries (do not cut!)


  1. Preheat the oven to 350 degrees F.
  2. Line the bottom of three 6-inch round cake pans or two 8-inch round cake pans with parchment paper rounds. Spray parchment paper and sides of the pans with nonstick cooking spray. YOU SHOULD USE PARCHMENT PAPER or the cake is likely to stick. Please do not forget.
  3. In a large bowl, whisk together the eggs, honey, yogurt, lemon zest, lemon juice and almond extract. The mixture should be smooth and well combined.
  4. In a separate bowl, whisk the almond flour, oat flour, poppyseeds, baking soda and salt. Add the dry ingredients to the wet ingredients and mix well with a rubber spatula until smooth.
  5. Divide batter evenly between pans and spread out with a spatula to smooth the tops. Bake for 18-28 minutes in the two 8-inch pans or 25-35 minutes for three 6-inch pans. Cakes are done when a tester comes out clean or with just a few crumbs attached. Allow the cake to cool completely before frosting or removing from the pans. The cake should be room temperature when you frost it. This is very important. Cakes can be made a day ahead if you’d like.
  6. Make your frosting: Add ½ cup raspberries to a blender and blend until smooth. Pour mixture through a sieve over a small bowl and use the back of a spoon to get all of the juice out so you only have the seeds remaining. Set the raspberry juice puree aside. In the bowl of an electric mixer, add the softened butter or vegan butter and whip on high until light and fluffy, about 1-2 minutes. Add 4 cups powdered sugar, lemon juice, lemon zest and 2 tablespoons of the raspberry puree; beat on high for 1-2 minutes more until well combined. Taste and add more powdered sugar to your liking, if necessary. You may need to scrape the frosting down the sides of the bowl and then beat again. Optional: You may need to add in a little bit of milk (about 1 tablespoon) to thin the frosting out so it’s a little more creamy, but it depends on how you like it! I love a thick frosting.
  7. Now it’s time to frost the cake: place about 1 tablespoons down onto the cake stand and spread out. Invert a cake onto the cake stand, add about 1/2 heaping cup frosting between each layer. Cut the raspberries reserved for the filling in half lengthwise, and place them over the filling between each layer, covering the entire surface. You want to sort of smoosh them into the frosting as best you can. It’s okay if they break a bit, but it is important that they are well nestled into the frosting so that there aren’t large gaps between the cake layers. Repeat with each cake, then frost the top and sides of the cake with the remaining lemon frosting. If the cake is slightly ‘naked’ on the outside, that’s okay, it’s going to be delicious!
  8. Garnish with fresh raspberries just before serving the cake to make sure they stay as fresh as possible!

  9. Cake will stay good at room temp for a day or so, then should be placed in the fridge. Cake will stay good for 5-7 days in the fridge, and should be well-covered to ensure freshness.

Recipe Notes

If you want to make a regular lemon buttercream, simply leave out the raspberry puree, add an extra tablespoon of lemon juice and 1-2 tablespoons of milk of choice to the frosting.

*You can also use regular siggi's raspberry or mixed berry cups.

To do a crumb layer: Frost the layers as you normally would and then coat the outside of the cake with a very thin layer of the frosting. Then, place the cake in the fridge for 10-15 minutes before you finish frosting. This is so that the crumbs stick to this layer of frosting and not your main layer.

**Feel free to make your own oat flour at home using this tutorial.

Instead of using fresh raspberries, you can use about ¼ cup raspberry jam between each layer, so you’d need ½ cup total. See more ideas in the blog post!