Name: Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 1/2 cup vegan butter, room temperature; 1/4 cup neutral oil (avocado oil recommended); 1 1/2 cups granulated sugar; 2 tbsp lemon zest (about 3 lemons); 1 3/4 cups non-dairy milk, room temperature; 1 1/2 tbsp vanilla extract; 3 cups gluten-free flour; 3 1/2 tsp baking powder; 1 tsp sea salt; 1/4 cup vegan butter; 4 oz vegan cream cheese; 2 1/2 cups powdered sugar; 1 tsp vanilla extract; Pinch of sea salt; 1-2 tbsp lemon juice; 1 tbsp lemon zest

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There is something truly magical about a soft, fluffy, and bright lemon cake that simply lifts your spirits with every bite. This Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe captures all the sunny, zesty goodness of the beloved Trader Joe’s original but made right in your own kitchen. Imagine a moist, tender cake infused with fresh lemon zest, topped with a dreamy, creamy lemon cream cheese frosting that strikes the perfect balance of tangy and sweet. It is such a delightful treat, perfect for any occasion, and always a crowd-pleaser that will have everyone asking for seconds.

Ingredients You'll Need

A rectangular metal tray filled with a smooth, pale yellow batter spread evenly across the surface. The batter has a slightly glossy texture with gentle swirls from spreading, and it fills the tray almost to the top. The tray is placed on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

These ingredients might seem simple, but each one plays an essential role in creating the luscious taste, texture, and appearance of this cake. From the vegan butter that brings richness and moisture, to the gluten-free flour that keeps the crumb light, every element works together harmoniously to build the perfect lemon flavor profile.

½ cup vegan butter, room temp: Provides a creamy, tender base while keeping the cake moist and dairy-free.

¼ cup neutral oil (avocado oil recommended): Adds extra moisture and keeps the cake super soft without overpowering the lemon notes.
1 ½ cups granulated sugar: Sweetens the cake evenly and helps with that desirable light crumb.
2 tablespoon lemon zest (about 3 lemons): Infuses fresh, vibrant citrus aroma and flavor that truly wakes up the cake.

1 ¾ cups non-dairy milk, room temp: Keeps the batter smooth and moist, perfect for vegan baking.
1 ½ tablespoon vanilla extract: Adds warmth and depth to balance the brightness of the lemon.
3 cups gluten-free flour: Provides structure without gluten, ensuring a tender but sturdy cake crumb.

3 ½ teaspoon baking powder: Gives the cake the perfect rise for a fluffy texture.
1 teaspoon sea salt: Enhances the cake’s flavor, balancing the sweetness and lemon zest perfectly.

Lemon Cream Cheese Frosting

¼ cup vegan butter: Base for creamy frosting, keeping it smooth and spreadable.

4 oz vegan cream cheese: Provides tangy richness for a luscious frosting.
2 ½ cups powdered sugar: Sweetens and thickens the frosting to the perfect consistency.
1 teaspoon vanilla extract: Adds smooth flavor complexity.
Pinch of sea salt: Balances the sweetness and enhances overall flavor.

1-2 tablespoon lemon juice: Boosts the citrus brightness in the frosting, customizable to your taste.
1 tablespoon lemon zest: Adds fresh lemon texture and punch.

How to Make Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe

Step 1: Prepare Your Pan and Oven

Preheat your oven to 350°F and either grease a 9×13-inch sheet pan or line it with parchment paper. This simple preparation ensures your cake comes out clean with perfect edges, making serving and cleanup a breeze.

Step 2: Cream the Vegan Butter, Oil, Lemon Zest, and Sugar

In a large bowl, beat together the vegan butter, neutral oil, the fragrant lemon zest, and granulated sugar until the mixture looks light and fluffy. This step is crucial to incorporate air and activate the sugars, setting a tender, airy foundation for your cake.

Step 3: Add Non-Dairy Milk and Vanilla Extract

Slowly pour in the room temperature non-dairy milk and the vanilla extract. It’s normal if the mixture looks a bit separated at this point; just keep the mixing gentle and steady to get an even batter.

Step 4: Mix in the Dry Ingredients

Combine the gluten-free flour, baking powder, and sea salt separately, then add them gradually to the wet ingredients. Mix until just combined to avoid overworking the batter, which helps maintain that perfectly fluffy, tender crumb we’re aiming for in this Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe.

Step 5: Bake the Cake

Pour your batter evenly into the prepared pan and bake for 30 minutes. Halfway through, give the pan a gentle rotation to ensure even baking. When a toothpick inserted into the center comes out clean, your cake is ready to cool.

Step 6: Cool Completely and Prepare Frosting

Transfer the cake to a cooling rack and let it come completely to room temperature before frosting. Meanwhile, beat together the vegan butter and vegan cream cheese until soft and fluffy. Gradually add the powdered sugar, vanilla, salt, and lemon juice/zest until you reach the perfect creamy consistency bursting with lemon flavor.

Step 7: Frost and Finish

Spread your luscious lemon cream cheese frosting evenly over the cooled cake. For an added touch of beauty and freshness, scatter some thin lemon slices and edible flowers across the top. This finishing touch makes it look as delightful as it tastes.

How to Serve Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe

A single small square piece of cake sits on a white plate with a beaded edge. The cake has two layers: the bottom layer is a light golden sponge with a soft, crumbly texture, and the top layer is a thick spread of white creamy frosting that is slightly wavy with small yellow sprinkles on top. A silver fork rests next to the cake on the plate. The background features a white marbled surface and soft, neutral walls. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Add a pop of color and dimension with thin lemon slices, candied lemon peel, or delicate edible flowers like pansies or violets. These little extras make every slice a picture-perfect celebration of spring and sunshine.

Side Dishes

This lemon mini sheet cake pairs beautifully with light, refreshing beverages like iced green tea or sparkling lemonade. For a more indulgent pairing, a scoop of vegan vanilla ice cream or fresh berries makes a lovely complement without overpowering the cake’s bright citrus flavor.

Creative Ways to Present

Try cutting the cake into cute, bite-sized squares for an elegant dessert platter or individual servings with a sprinkle of powdered sugar and a small dollop of frosting on each. You can also layer the cake with extra frosting and lemon curd for a show-stopping lemonade-inspired trifle.

Make Ahead and Storage

Storing Leftovers

Keep any leftover cake covered tightly with plastic wrap or in an airtight container at room temperature for up to two days. For longer storage, refrigerate to keep the frosting fresh, but let the cake warm to room temperature before serving to bring back that perfect softness.

Freezing

You can freeze the cake, unfrosted, by wrapping it tightly in plastic wrap and then foil, storing it for up to three months. When you’re ready, thaw overnight in the fridge, then frost fresh for best results. Alternatively, freeze frosted pieces individually on a tray before transferring to a bag for quick grab-and-go treats.

Reheating

To revive freshness, gently warm slices in the microwave for 10-15 seconds or let them sit at room temperature if refrigerated. Avoid overheating as that can melt the frosting and dry out the cake’s tender crumb.

FAQs

Can I use regular dairy products instead of vegan substitutes?

Absolutely! You can swap vegan butter and cream cheese for their dairy versions if you prefer. Just keep the same quantities, and your cake will still turn out soft and flavorful, though it won’t be vegan.

Is this recipe gluten-free?

Yes, the recipe uses gluten-free flour, making it suitable for those avoiding gluten. Just be sure your flour blend includes xanthan gum or a suitable binder for best results.

What non-dairy milk works best here?

Almond, oat, or soy milk all work wonderfully and keep the cake moist. Use whichever you have on hand or prefer for flavor.

Can I make this cake without a mixer?

Yes, you can mix everything by hand with a sturdy whisk or wooden spoon. Just take your time creaming the butter and sugar well so the cake stays fluffy.

How tangy is the lemon flavor?

This Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe strikes a bright but balanced lemon flavor thanks to both zest and juice in the cake and frosting, making it refreshingly tangy without overwhelming sweetness.

Final Thoughts

If you’re craving a seriously delicious treat that’s bursting with fresh lemon flavor and has that perfect soft, fluffy texture, this Copycat Trader Joe’s Lemon Mini Sheet Cake Recipe will not disappoint. It’s become one of my favorite go-to desserts to brighten any day or special gathering. Once you try it, I’m sure it’ll be a staple in your recipe box too!