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Koku’s Chocolate & Vanilla Celebration Cake – Easy Homemade Oven Recipe | Koku Bytes

Chocolate & Vanilla Celebration Cake

Cakes

⏳ 120 minutes

Celebrate life’s sweetest moments with this dreamy two-layer cake. Moist chocolate, tender vanilla, luscious Nutella buttercream, and homemade strawberry jam - a showstopping centerpiece that’s all about flavor and love.

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Servings: 12

--- Vanilla Cake ---
½ cup salted butter, softened
½ cup vegetable oil
1½ cups granulated sugar
1½ cups buttermilk, room temp
3 large eggs, room temp
1 tbsp vanilla extract
3½ cups cake flour
4 tsp baking powder
½ tsp salt
--- Chocolate Cake ---
3 cups all-purpose flour
3 cups granulated sugar
1½ cups unsweetened cocoa powder
1 tbsp baking soda
1½ tsp baking powder
1½ tsp salt
4 large eggs
1½ cups buttermilk
1½ cups warm water (coffee)
½ cup vegetable oil
2 tsp vanilla extract
--- Filling & Frosting ---
½ cup homemade strawberry jam (recipe included)
--- Nutella-Oreo Buttercream ---
1 cup (225g) unsalted butter, softened
¾ cup Nutella (or to taste)
6–8 crushed Oreo cookies

2 × 9-inch (23cm) round cake tins
Mixing bowls
Hand or stand mixer
Rubber spatula
Offset spatula
Wire cooling rack
Parchment paper

Step 1

--- Bake the Vanilla Cake ---

Step 2

Preheat oven to 350°F (175°C). Grease and line one 9-inch round cake pan.

Step 3

Cream butter, oil, and sugar until fluffy. Beat in buttermilk, eggs, and vanilla.

Step 4

Whisk flour, baking powder, and salt in a separate bowl. Fold into wet mixture.

Step 5

Pour into pan, bake for 25–30 minutes. Let cool completely.

Step 6

--- Bake the Chocolate Cake ---

Step 7

Grease and line one 9-inch round cake pan.

Step 8

Mix dry ingredients: flour, sugar, cocoa, baking soda, baking powder, salt.

Step 9

Add eggs, buttermilk, warm water, oil, and vanilla. Beat until smooth.

Step 10

Pour into pan, bake 30–35 minutes. Let cool completely.

Step 11

--- Make the Nutella-Oreo Buttercream ---

Step 12

Whip butter on medium-high for 12–15 minutes until light and fluffy.

Step 13

Beat in Nutella until well combined.

Step 14

Fold in crushed Oreos. Chill slightly if too soft.

Step 15

--- Assemble the Cake ---

Step 16

Level cakes if needed. Place chocolate layer on serving plate.

Step 17

Pipe a buttercream boundary around edges. Fill center with strawberry jam.

Step 18

Top with vanilla cake layer. Frost entire cake with remaining buttercream.

Step 19

Decorate with more Oreos, strawberries, or Nutella drizzle as desired.

💡 Chill frosting slightly before piping if too soft.
💡 Apply a crumb coat and chill for clean edges.
💡 Serve cake at room temp or slightly chilled for best flavor.
💡 Make jam and caramel ahead - both store well.
💡 Caramel thickens as it cools - warm gently if needed.
💡 Don’t overload filling to keep layers stable.
💡 DIY Cake Flour: For every cup of all-purpose flour, remove 2 tbsp and replace with 2 tbsp cornstarch. Sift well.

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