Lime Cake (Gluten-Free & Vegan)

Looking for the ultimate refreshing summer dessert? This easy Lime Cake is packed with vibrant, freshly squeezed citrus, layered with a luscious homemade lime curd, and covered in a dreamy lime cream cheese buttercream. It’s ultra-moist, perfectly tangy, and has that signature tender crumb we all crave!

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The Best Lime Cake

If you are a fan of bright, citrusy desserts, this cake is about to become your new favorite bake. It is the perfect balance of sweet and tart, making it incredibly refreshing for any occasion. Here is why this recipe is an absolute standout:

• Bright & Zesty Flavor: By using both fresh lime zest and fresh lime juice, you get that authentic, puckery punch.
• The Texture is Dreamy: Additionally, thanks to a splash of vegan sour cream, this gluten-free crumb stays incredibly soft, fluffy, and moist for days.
• Triple the Lime: We aren’t just putting citrus in the cake. With a smooth homemade lime curd filling and a zesty cream cheese frosting, there is lime goodness in every single bite.

Lime Cake Key Ingredients & Dietary Substitutions

One of my favorite things about this recipe is how effortlessly adaptable it is. Here is how you can customize it to fit your dietary needs:

• Gluten-Free Flour: I used a 1:1 gluten-free baking blend (like Bob’s Red Mill, XO Baking, or Better Batter). Ensure your blend contains xanthan gum. If you aren’t gluten-free, standard all-purpose flour works perfectly at a 1:1 ratio.
• Vegan Sour Cream: This is our secret weapon for moisture! Applesauce works beautifully here too as an easy swap to keep the cake light and tender.
• Vegan Butter & Cream Cheese: To keep this dairy-free and vegan, grab your favorite block-style vegan butter and a firm vegan cream cheese (like Violife or Kite Hill). Traditional dairy butter and cream cheese work seamlessly if you don’t have dairy restrictions. Make sure you use full-fat, brick-style.

Pro-Tips for Lime Cake Success

Baking a gluten-free and vegan lime layer cake can sometimes feel a bit intimidating, but I promise it doesn’t have to be! To make sure your layers turn out absolutely flawless, incredibly moist, and beautifully stacked every single time, keep these simple baker’s secrets in mind:

• The Sugar Rub: Don’t skip the step of mixing your sugar and lime zest together first! Massaging the zest into the granulated sugar releases the essential citrus oils, intensifying the lime flavor throughout the entire cake.
• Let the Batter Rest: After mixing your batter and pouring it into the cake pans, let it sit on the counter for about 10 to 15 minutes before popping it into the oven. Gluten-free flours take a little longer to absorb liquids than traditional wheat flour. Giving the batter a short rest helps hydrate the starches, ensuring a perfectly smooth, tender crumb and preventing any unwanted grittiness!
• Keep it Cool: Make sure your lime curd is fully cooled to room temperature (or chilled) before assembling. If it’s even slightly warm, it will melt your beautiful buttercream border and cause your layers to slide!

How to Make A Lime Cake (Step-by-Step)

Lime Cake Layers

1. Prep: To begin, preheat your oven to 350ºF. Line two 8-inch cake pans with non-stick baking spray and parchment paper.
2. Infuse the Sugar: In a stand mixer, combine the sugar and lime zest. Mix on high for 2 minutes to release those gorgeous citrus oils.
3. Wet Ingredients: Next, add the lime juice, sour cream, milk, oil, and vanilla extract. Mix until thoroughly combined.
4. Dry Ingredients: Add the flour, baking powder, baking soda, and fine sea salt. Mix on low until just incorporated. Be careful to not overmix!
5. Bake: Divide evenly into pans and bake for 22–27 minutes until a toothpick comes out clean. Cool for 10 minutes, then invert onto a wire rack. Baker’s tip: if making gluten-free, allow the batter to rest in the pans for 20-30 minutes before baking.

Lime Curd

1. Whisk & Cook: In a small pot, whisk together the lime juice, milk, sugar, cornstarch, and salt until smooth.
2. Thicken: Cook over medium-high heat, whisking constantly, for about 5 minutes until it thickens beautifully.
3. Finish: Once thickened, remove from heat, stir in the butter (and a drop of green food dye if you want that pop of color). Pour into a shallow dish, cover the surface directly with plastic wrap, and let cool.

Lime Cream Cheese Buttercream

1. Cream: Beat the butter, cream cheese, and lime zest on high speed for 5–10 minutes until incredibly light and fluffy.
2. Fluff: Add the powdered sugar and salt on low until combined, then crank it up to high for 5 minutes until smooth and pillowy.
3. Chill: The frosting is very soft. Chill it until needed.

Cake Assembly

1. Place your first cooled layer on a cake board or plate. Top with 1 cup of buttercream.
2. Secondly, pipe a sturdy buttercream border around the edge of the layer to create a “dam,” then fill the center with your cooled lime curd.
3. Top with the second layer. Give the cake a thin “crumb coat” of buttercream and chill for 20 minutes to lock everything in place.
4. Finally, frost the outside with your remaining buttercream, keeping it rustic and textured. Decorate with fresh lime slices or delicate apple blossom flowers!

Fun Flavor Twists to Try

Want to switch things up? This lime base is the perfect canvas for creative flavor pairings. Here are a few fun twists you can try next time you bake it:

• Coconut Lime (Tropical Paradise): Swap the vegetable oil for melted coconut oil in the cake batter, and fold a cup of toasted shredded coconut into the buttercream or between the layers for a total vacation vibe.
• Raspberry Lime (Zesty Berry): Spread a thin layer of fresh raspberry compote or jam alongside the lime curd filling for a gorgeous pop of color and a sweet-tart contrast.
• Ginger Lime (Warm Spice): Add 1/2 teaspoon of ground ginger (or a tablespoon of finely minced candied ginger) to the dry ingredients to give the lime cake a cozy, sophisticated warmth.
• Cherry Limeade (Nostalgic Diner Style): Garnish the top of the cake with glossy Maraschino cherries and add a tiny splash of cherry syrup to the buttercream for a fun, retro look and taste.

The Best Lime Cake Recipe

There you have it; a bright, tangy, and utterly gorgeous lime cake that is sure to be the star of your next summer gathering. Whether you are baking this completely vegan and gluten-free or mixing it up with standard pantry staples, the incredible punch of fresh citrus and creamy frosting makes this a recipe you’ll come back to time and time again.

If you make this cake, I would absolutely love to see your creations! Leave a comment below, give the recipe a 5-star rating in the recipe card, and don’t forget to tag me on Instagram @cakedbykatie so I can share your beautiful bakes. Happy baking!

Other Citrus-Inspired Recipes

If you’re looking for more bright and zesty bakes to try after this Lime Cake, you’ll love these other citrus favorites from the blog:

• Lemon Raspberry Bars
• Gluten-Free Lemon Zucchini Cake
• Coconut Orange Cookies (Vegan & Gluten-Free)

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