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Create a moist and flavorful Lemon Poppy Seed Cake with this easy recipe. Packed with fresh lemon zest, juicy citrus notes, and a creamy buttercream frosting, this homemade cake is perfect for celebrations, holidays, or everyday dessert. Its tender crumb and vibrant taste make it a standout treat for any occasion.

Ingredients

For the Lemon Poppy Seed Cake:

3/4 cup (12 tablespoons) unsalted butter, softened
1 cup granulated sugar
3 large eggs, at room temperature
2 cups all-purpose flour
2 1/2 teaspoons baking powder
2 tablespoons poppy seeds (sifted to remove debris)
1 tablespoon lemon zest (from about 2 large lemons)
1 tablespoon fresh lemon juice
1 teaspoon vanilla extract
1/2 cup buttermilk, at room temperature

For the Lemon Buttercream Frosting:

1 cup (2 sticks) unsalted butter, softened
4 ounces cream cheese, softened
4 cups powdered sugar
3 tablespoons fresh lemon juice
1 teaspoon vanilla extract

Instructions

How to Make Lemon Poppy Seed Cake:

Preheat your oven to 350°F (175°C) and position the rack in the center. Grease the sides and bottom of two 9-inch cake pans, and line the bottoms with parchment paper rounds.
In a large mixing bowl, use an electric mixer to cream the softened butter and sugar on high speed until light and fluffy, about 2 minutes. Add the eggs one at a time, mixing until just incorporated after each addition.
In a separate bowl, whisk together the flour, baking powder, and poppy seeds.
Gradually add half of the dry ingredients to the butter mixture, mixing just until combined.
Stir in the lemon zest, lemon juice, and vanilla extract. With the mixer on low speed, mix in the buttermilk, followed by the remaining dry ingredients. Continue mixing until the batter is smooth and no lumps remain.
Divide the batter evenly between the prepared pans, smoothing the tops. Bake for 20–23 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes, then transfer them to a wire rack to cool completely.

How to Make Lemon Buttercream Frosting:

In a large mixing bowl, beat the butter with an electric mixer on high speed until creamy, about 2 minutes.
Add the softened cream cheese and beat until smooth and well combined.
Gradually mix in the powdered sugar, followed by the lemon juice and vanilla extract. Continue beating on high speed for about 5 minutes, or until the frosting is light and fluffy.

To Assemble the Cake:

Place one cake layer on a serving platter and spread 1/3 of the buttercream frosting evenly over the top.
Add the second layer (flat side up) and spread another 1/3 of the frosting over the top and sides of the cake.
If desired, sprinkle the edges of the cake with poppy seeds for decoration.
Use the remaining frosting to pipe designs on top, and garnish with slices of fresh lemon.

Why You’ll Love This Recipe

This Lemon Poppy Seed Cake is light, moist, and bursting with vibrant lemon flavor. The combination of the soft cake and the creamy lemon buttercream makes it perfect for any celebration or a simple dessert treat.

Tips

Ensure all ingredients are at room temperature for a smoother batter.
Sift the powdered sugar before adding it to the frosting for a lump-free finish.
Use fresh lemon juice for the best flavor; bottled juice doesn’t compare.
For even baking, rotate the pans halfway through the baking time.

Variations and Substitutions

Gluten-Free: Replace the all-purpose flour with a gluten-free flour blend.
Citrus Twist: Swap the lemon zest and juice for orange or lime for a different flavor.
Dairy-Free Option: Use vegan butter and cream cheese for a dairy-free version.
Layer Sizes: Make a single-layer cake or cupcakes with the same batter—adjust the baking time accordingly.

FAQs

Can I make this cake ahead of time?
Yes! You can bake the cake layers up to 2 days in advance and store them, wrapped tightly, at room temperature. Frosting can also be made ahead and refrigerated for up to 3 days.

Can I freeze this cake?
Absolutely! Wrap the unfrosted cake layers in plastic wrap and freeze for up to 2 months. Thaw completely before frosting.

Is this cake very sweet?
It has a balanced sweetness, with the lemon juice adding a tangy contrast.

Serving

Serve this cake as a delightful dessert for birthdays, showers, or afternoon tea. It pairs beautifully with a cup of coffee or herbal tea.

Suggestions

Top with fresh berries like raspberries or blueberries for a burst of color and flavor.
Add a drizzle of lemon glaze over the frosting for extra zing.
Serve with a dollop of whipped cream for a lighter finish.