This strawberry lobster cake is a soft lemon sheet cake made with freshly milled flour and topped with creamy lemon buttercream and fresh strawberries arranged into a coastal lobster design. It’s simple to make, surprisingly approachable, and just as delicious when made with all-purpose flour if that’s what you have on hand.
Whether it’s heading to a summer birthday, a coastal gathering, or simply appearing at the end of a weeknight dinner on the porch, this strawberry lobster cake has a way of making the occasion feel a little more memorable. Bright lemon flavor, fresh strawberries, and a simple handmade design come together in a dessert that feels distinctly summer.

Why You’ll Love This Recipe
Ingredients

The Lemon Cake

The Lemon Buttercream

Variations & Add-Ins
- Blueberry border – Add fresh blueberries around the edges for extra color and a classic summer berry combination. The deep blue berries look especially beautiful against the pale lemon frosting.
- Almond extract – Add a small pinch (about ⅛ teaspoon) to the buttercream for subtle depth and a bakery-style flavor.
- Vanilla cake base – Replace the lemon juice and zest with vanilla for a softer, more traditional cake flavor.
- Mini lobster cakes – Divide the batter between mini loaf pans or small cake pans for individual desserts that are perfect for gatherings.
- Extra lemon glaze – Drizzle a simple lemon glaze over the finished cake for an additional layer of bright citrus flavor.
- Fresh raspberry garnish – Scatter a handful of raspberries around the border before serving for a beautiful pop of color and extra summer fruit flavor.
Recipe Tips
Use room temperature buttermilk – Cold buttermilk can cause the batter to mix unevenly. Let it sit out for about 30 minutes before baking so it blends smoothly with the other ingredients.
Cream thoroughly – Beat the butter and sugar for a full 3–4 minutes. This creates air in the batter and helps produce a lighter, fluffier cake.
Don’t overmix once the flour is added – Mix only until combined to maintain a tender crumb. Overmixing can make the cake dense instead of soft.
Fold the egg whites gently – A light hand helps preserve the air you’ve whipped into them. Those air bubbles help give the cake its delicate texture.
Dry the strawberries well – Excess moisture can soften the buttercream and affect the decoration. Pat them dry thoroughly before arranging them on the cake.
Chill before decorating – Slightly chilled frosting creates a firmer surface for decorating and helps keep the strawberry pieces neatly in place.
Choose varied strawberry sizes – Larger berries work best for the claws while smaller berries create natural-looking tail segments. Having a variety makes the design easier to assemble.
Cool completely before frosting – Even a slightly warm cake can melt the buttercream. Allow the cake to cool fully before decorating for the cleanest results.
Instructions
- Mill the flour: Mill 126 grams hard white wheat berries and 84 grams soft white wheat berries. Whisk the freshly milled flours together to create a balanced flour blend that yields approximately 210 grams (1¾ cups) of flour. If preferred, substitute 1¾ cups all-purpose flour.
- Preheat the oven: Preheat to 350°F and grease a 7×9-inch baking pan. A light coating of butter or baking spray helps ensure the cake releases easily after baking.
- Whisk the dry ingredients: In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until evenly combined. This helps distribute the leavening ingredients throughout the batter.
- Cream the butter and sugar: In a large mixing bowl, beat the softened butter and granulated sugar together for 3–4 minutes, until light and fluffy. The mixture should become noticeably paler in color.
- Add the egg yolks and citrus: Mix in the egg yolks until fully incorporated. In a separate bowl, stir together the lemon zest, lemon juice, vanilla, and buttermilk.
- Combine the batter: Alternate adding the dry ingredients and buttermilk mixture, beginning and ending with the flour mixture. Mix just until combined to keep the cake tender.
- Whip the egg whites: In a clean bowl, beat the egg whites to soft peaks. They should hold a gentle curve when the beaters are lifted.
- Fold in the whites: Gently fold the whipped egg whites into the batter until no streaks remain. Take your time to preserve as much air as possible.
- Bake: Spread the batter evenly into the prepared pan and bake for 28–35 minutes, until a toothpick inserted into the center comes out clean. Allow the cake to cool completely before frosting.
- Make the buttercream: Beat the butter until smooth, then gradually add the powdered sugar, lemon juice, lemon zest, salt, and cream until light, fluffy, and easily spreadable.
- Frost and decorate: Spread the buttercream over the cooled cake and arrange the strawberries into a lobster design. Use larger berries for the claws and smaller pieces for the body and tail.
- Chill and serve: Refrigerate until ready to serve. A brief chill helps the frosting set and makes cleaner slices.

Freezing & Storage
- Refrigerator – Store loosely covered in the refrigerator for up to 24 hours for the freshest appearance. The strawberries are at their best within the first day.
- Avoid decorating too early – Fresh strawberries are best added within a few hours of serving. This helps prevent excess moisture from softening the design.
- Make the cake ahead – Bake and frost the cake the day before serving. Add the strawberry decoration shortly before your gathering.
- Freeze the unfrosted cake – Wrap tightly and freeze for up to 2 months before decorating. Thaw overnight in the refrigerator before frosting.
- Clean slices – Use a sharp knife dipped in hot water and wiped dry between cuts for neat, bakery-style slices.
Recipe FAQs
More Coastal Cottage Summer Recipes

Strawberry Lobster Lemon Cake Made with Freshly Milled Flour
Equipment
- 7×9-inch baking pan
- Mixing bowls
- Hand mixer or stand mixer
- Whisk
- Rubber spatula
- Microplane or zester
- Cooling rack
- Offset spatula or butter knife
- Sharp knife
Ingredients
Lemon Cake:
- 1¾ cups freshly milled hard white and soft white wheat flour 210 grams — made from 126 grams hard white wheat berries and 84 grams soft white wheat berries
- 1¼ teaspoons baking powder 6 grams
- ¼ teaspoon baking soda 1.5 grams
- ¼ teaspoon salt 1.5 grams
- ⅔ cup unsalted butter softened (150 grams)
- ¾ cup plus 2 tablespoons granulated sugar 175 grams
- 2 large eggs separated (100 grams)
- 1 tablespoon fresh lemon zest 6 grams
- 3 tablespoons fresh lemon juice 45 grams
- ¾ teaspoon vanilla extract 3 grams
- ⅔ cup buttermilk room temperature (155 grams)
Lemon Buttercream:
- ⅔ cup unsalted butter softened (150 grams)
- 2½ cups powdered sugar 300 grams
- 2 tablespoons fresh lemon juice 30 grams
- 2 teaspoons fresh lemon zest 4 grams
- 1 –2 tablespoons heavy cream 15–30 grams
- Pinch of salt
Decoration:
- 6–8 large fresh strawberries
Instructions
- Mill the flour: Mill 126 grams hard white wheat berries and 84 grams soft white wheat berries. Whisk the freshly milled flours together to create a balanced flour blend that yields approximately 210 grams (1¾ cups) of flour. If preferred, substitute 1¾ cups all-purpose flour.
- Preheat the oven: Preheat to 350°F and grease a 7×9-inch baking pan. A light coating of butter or baking spray helps ensure the cake releases easily after baking.
- Whisk the dry ingredients: In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until evenly combined. This helps distribute the leavening ingredients throughout the batter.
- Cream the butter and sugar: In a large mixing bowl, beat the softened butter and granulated sugar together for 3–4 minutes, until light and fluffy. The mixture should become noticeably paler in color.
- Add the egg yolks and citrus: Mix in the egg yolks until fully incorporated. In a separate bowl, stir together the lemon zest, lemon juice, vanilla, and buttermilk.
- Combine the batter: Alternate adding the dry ingredients and buttermilk mixture, beginning and ending with the flour mixture. Mix just until combined to keep the cake tender.
- Whip the egg whites: In a clean bowl, beat the egg whites to soft peaks. They should hold a gentle curve when the beaters are lifted.
- Fold in the whites: Gently fold the whipped egg whites into the batter until no streaks remain. Take your time to preserve as much air as possible.
- Bake: Spread the batter evenly into the prepared pan and bake for 28–35 minutes, until a toothpick inserted into the center comes out clean. Allow the cake to cool completely before frosting.
- Make the buttercream: Beat the butter until smooth, then gradually add the powdered sugar, lemon juice, lemon zest, salt, and cream until light, fluffy, and easily spreadable.
- Frost and decorate: Spread the buttercream over the cooled cake and arrange the strawberries into a lobster design. Use larger berries for the claws and smaller pieces for the body and tail.
- Chill and serve: Refrigerate until ready to serve. A brief chill helps the frosting set and makes cleaner slices.
Notes
Did you try this recipe?
If you give it a try, I hope it fills your kitchen with something comforting. I’d love to see your version—tag me on IG @rubyscozycottage

Ruby Ann
Lifestyle blogger blending cottage comfort with a warm, bookish cozy-academia charm. I share whimsical, cozy recipes, gentle cottage inspiration, and the everyday magic that makes home feel inviting and quietly enchanting.





