06/05/2026
Fresh Spring Lemon Sheet Cake - Bright Easter Dessert
"Rainy Sunday called for something bright and springy, ended up making this lemon sheet cake and honestly it was exactly what I needed. The house smells incredible right now and I just finished frosting it. Made it for a family thing tomorrow but I'm not gonna lie, already carved out a corner piece to taste test and wow.
Here's what I used:
1/4 Cup (60ml) fresh lemon juice about 1 medium lemon
1 1/4 Cups (300ml) whole milk, room temperature
2 1/2 Cups (265g) sifted cake flour
1 Tbsp baking powder
1/2 tsp salt
1 1/2 Cups (300g) granulated sugar
1 Tbsp grated lemon zest about 1 medium lemon
1/2 Cup (113g) unsalted butter, room temperature
4 large egg whites, room temperature
1/2 Cup (120ml) vegetable oil
1/2 tsp pure lemon extract (optional)
Lemon Buttercream:
1 1/2 Cups (339g) unsalted butter, room temperature
5 1/4 Cups (630g) powdered sugar
3 Tbsp (45ml) fresh lemon juice
1 Tbsp whole milk, room temperature
1/4 tsp salt, or to taste
2-3 drops yellow food color gel (optional)
Garnish:
6 lemon slices
Here's how it went:
1. Preheat your oven to 325Β°F and prep a 9x13 pan with baking spray and parchment paper on the bottom. Don't skip the parchment, it makes removal so much easier.
2. Mix the lemon juice with the milk in a measuring cup and let it sit. It'll curdle and look weird but that's totally normal and exactly what you want for the texture.
3. Whisk together the sifted cake flour, baking powder, and salt in a bowl and set aside.
4. In your stand mixer with the paddle attachment, mix the sugar and lemon zest together for about a minute until it smells amazing. Add the butter and cream everything together on medium speed for 2-3 minutes until light and fluffy.
5. With the mixer on low, add the egg whites one at a time, then add the vegetable oil and lemon extract if you're using it. Beat on high for one minute.
6. Turn off the mixer and add all the flour mixture at once. Mix on low until just combined, then slowly pour in that curdled lemon-milk mixture. Mix until smooth, about 30 seconds but don't overmix.
7. Pour the batter into your pan and bake for 28-32 minutes. Mine took the full 32 so check with a toothpick in the center. Let it cool completely before frosting or you'll have a melted mess.
8. For the buttercream, whip the butter on high for about 5 minutes until it's super creamy and pale. Add the powdered sugar in two batches, mixing well after each one and scraping down the bowl.
9. Add the lemon juice, milk, and salt and mix on low for 1-2 minutes until smooth. Add the yellow food coloring if you want that pretty spring color.
10. Once the cake is totally cool, frost it however you like. I did rustic swirls with an angled spatula and piped a shell border around the edges with a piping bag and Wilton Tip 4B, then added some fresh lemon slices on top.
Few things I noticed: the cake is super moist and fluffy, like almost pound cake texture but lighter. Don't rush the cooling time or the buttercream will slide right off, I almost made that mistake. I used the full amount of frosting because I love a thick layer and wanted to do the piped border, but you could definitely use less if you're just doing a simple top layer. Also fair warning, this makes a ton of buttercream so if you're not frosting the sides or piping, maybe cut the recipe down.
The lemon flavor is bright and tangy but balanced with the sweetness of the buttercream. My only regret is not making this yesterday because waiting until tomorrow to serve it is going to be torture.
What do you guys usually serve with lemon desserts like this? I'm thinking maybe some fresh berries on the side or just coffee?"