This Strawberry Happy Birthday Cake is a celebration favorite — soft layers of moist strawberry cake filled with sweet, juicy strawberry compote and frosted with silky vanilla buttercream. Topped with fresh strawberries, whipped cream, and a sprinkle of edible glitter or sprinkles, this cake is perfect for birthdays, baby showers, or any occasion where you want to make someone feel extra special.
The cake itself gets its rich strawberry flavor from a combination of fresh mashed strawberries and puree , baked into a tender batter that rises beautifully and stays moist. Between each layer, we add a homemade strawberry filling that brings a natural sweetness and vibrant color.
It’s a classic layer cake that’s easy enough for home bakers but elegant enough for parties. Whether you’re celebrating a milestone birthday or just want to surprise someone with a homemade treat, this cake will bring smiles and seconds!
With simple ingredients and clear steps, this cake can be made in one day — no need to wait overnight! Plus, it’s easily customizable with vegan, gluten-free, or dairy-free options if needed.
Make it even more festive by writing “Happy Birthday” in bold letters using piping bags or chocolate shavings. It’s a dessert that truly says “I care” — and tastes like love in every bite.
Ingredients (Makes 1 8-inch Layer Cake / Serves 10–12):
For the Cake:
- 2 cups all-purpose flour
- 1½ tsp baking powder
- ½ tsp baking soda
- ½ tsp salt
- ½ cup unsalted butter, softened
- 1½ cups granulated sugar
- 2 large eggs
- 1 tsp vanilla extract
- 1 cup mashed fresh strawberries
- ½ cup strawberry puree (blended strawberries strained)
- ½ cup milk or buttermilk
For the Strawberry Filling:
- 1 cup fresh strawberries, finely chopped
- ¼ cup granulated sugar
- 1 tbsp cornstarch
- 2 tbsp water
- ½ tsp lemon juice
For the Frosting:
- 1 cup unsalted butter, softened
- 4 cups powdered sugar
- 1 tsp vanilla extract
- 2–3 tbsp heavy cream or milk
- Pinch of salt
- Optional: food coloring (pink or red), sprinkles, edible gold dust
For Decoration:
- Fresh strawberries (sliced or whole)
- Whipped cream (optional)
- Edible flowers or sprinkles
- Happy Birthday candle or letter candles
Instructions:
Step 1: Preheat and Prepare
Preheat oven to 350°F (175°C) . Grease and line two 8-inch round cake pans with parchment paper.
Step 2: Make the Cake Batter
In a bowl, sift together flour, baking powder, baking soda, and salt .
In another bowl, beat butter and sugar until fluffy. Add eggs one at a time, then stir in vanilla extract .
Add mashed strawberries and puree to the wet mixture, alternating with milk , beginning and ending with dry ingredients.
Divide batter evenly between prepared pans.
Bake for 25–30 minutes until a toothpick comes out clean. Let cool completely.
Step 3: Make the Strawberry Filling
Combine chopped strawberries, sugar, cornstarch, water, and lemon juice in a small saucepan. Cook over medium heat, stirring constantly, until thickened. Cool completely before using.
Step 4: Prepare the Buttercream Frosting
Beat butter until smooth. Gradually add powdered sugar , followed by vanilla , cream/milk , and a pinch of salt . Beat until light and fluffy. Adjust consistency by adding more sugar or cream as needed.
Optional: Add a few drops of pink or red gel food coloring for a fun birthday look.
Step 5: Assemble the Cake
Place one cooled cake layer on a plate. Spread frosting on top and add a layer of strawberry filling .
Repeat with the second layer. Frost the top and sides with remaining buttercream. Use an offset spatula or piping bag for a smooth or decorative finish.
Step 6: Decorate & Serve
Top with fresh strawberries , a dusting of sprinkles , or a piped “Happy Birthday” message .
For extra flair, add whipped cream rosettes , candles , or edible gold leaf for a luxury touch.
Slice and serve chilled or at room temperature.
Pro Tips:
- Use room temperature ingredients for smoother batter and frosting.
- Chill the cake layers for 15 minutes before frosting to prevent crumbs.
- Substitute buttermilk for extra moisture and tenderness.
- Make it gluten-free by using gluten-free flour blend.
- Try strawberry jam or preserves if fresh berries aren’t available.
