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Easy Leo Birthday Cake (Vanilla Base with Bold Flavors & Zodiac Decor)

chef Laya
A moist, easy vanilla birthday cake designed for Leo celebrations. Customize with bold flavors like orange or chocolate, then decorate with gold drip, constellation details, and lion or crown toppers for a dazzling zodiac cake.
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Prepr Time 25 minutes
Cooking Time 35 minutes
ToTal Time 1 hour
Type of plate Dessert
kitchen American
Serving 6

Ingredients
  

For the Vanilla Cake (two 8‑inch / 20 cm layers)

  • 2 ½ cups 315 g all‑purpose flour
  • 2 ½ tsp baking powder
  • ½ tsp salt
  • ¾ cup 170 g unsalted butter, softened
  • 1 ¼ cups 250 g granulated sugar
  • 4 large eggs room temperature
  • 1 tbsp vanilla extract
  • 1 cup 240 ml whole milk or buttermilk, room temperature

Optional flavor variations (choose one):

  • Chocolate: Replace ½ cup 60 g flour with ½ cup (40 g) unsweetened cocoa powder; add ½ cup (120 ml) hot coffee to the milk.
  • Orange‑chocolate: Add zest of 1 orange + 1 tsp orange extract to the batter; use orange juice for half of the milk.

For the Vanilla Buttercream Frosting

  • 1 cup 225 g unsalted butter, softened
  • 4 –5 cups 480–600 g powdered sugar, sifted
  • 2 –3 tbsp heavy cream or milk
  • 1 –2 tsp vanilla extract
  • Pinch of salt

For the Gold Drip (optional but very “Leo”)

  • ¾ cup 130 g white chocolate chips or chopped white chocolate
  • ¼ cup 60 ml heavy cream
  • ½ –1 tsp edible gold luster dust or gold gel food coloring

For Zodiac Decor (choose what you like)

  • Edible gold leaf flakes or edible glitter
  • Fondant or store‑bought lion/crown/constellation cake topper
  • Small fondant stars or edible star sprinkles
  • Gel food coloring in gold orange, and red (optional)

Instructions
 

Prep pans and oven

  • Preheat oven to 350°F (175°C).
  • Grease two 8‑inch (20 cm) round cake pans, line bottoms with parchment paper, and lightly grease again.

Mix dry ingredients

  • In a medium bowl, whisk together flour, baking powder, and salt. Set aside.

Cream butter and sugar

  • In a large bowl or stand mixer, beat softened butter and sugar on medium speed until pale and fluffy (about 3 minutes).

Add eggs and vanilla

  • Add eggs one at a time, mixing well after each addition.
  • Mix in vanilla extract (and orange extract, if using).

Combine wet and dry

  • With mixer on low, add flour mixture and milk in 3 additions:
  • ⅓ flour mix
  • ½ milk
  • ⅓ flour mix
  • remaining milk
  • remaining flour mix
  • Mix just until combined; do not overmix. If making chocolate or orange‑chocolate version, fold in cocoa/coffee or orange elements now.

Bake the layers

  • Divide batter evenly between prepared pans (smooth tops with a spatula).
  • Bake 30–35 minutes, until a toothpick inserted in the center comes out clean or with a few moist crumbs.
  • Cool in pans 10 minutes, then turn out onto a wire rack to cool completely before frosting.

Make the buttercream

  • Beat softened butter until creamy (about 2 minutes).
  • Gradually add powdered sugar, 1 cup at a time, on low speed.
  • Add cream/milk, vanilla, and salt; whip on medium‑high for 2–3 minutes until light and spreadable. Adjust consistency with more sugar (thicker) or cream (thinner).

Assemble the cake

  • Level cake tops if needed with a serrated knife.
  • Place one layer on a cake board or plate; spread a layer of buttercream on top. Add any filling (ganache, jam, caramel) if desired.
  • Top with second layer; apply a thin crumb coat of buttercream all over. Chill 15–20 minutes.
  • Apply a final, smooth layer of buttercream. Use an offset spatula or bench scraper for clean sides.

Create the gold drip (optional)

  • Heat cream until just simmering; pour over white chocolate in a heatproof bowl. Let sit 1–2 minutes, then stir until smooth.
  • Mix in gold luster dust or gold gel until you have a rich, metallic color.
  • Let cool slightly until thick but still pourable.
  • Spoon around the top edge so it drips naturally down the sides. Let set before adding toppers.

Add zodiac decor

  • Press gold leaf flakes or sprinkle edible glitter lightly over the sides/top.
  • Add your chosen topper: lion, crown, or “Leo” script.
  • For a constellation effect, place small fondant stars on top and connect with thin lines of black or gold icing.
  • If desired, pipe “Happy Birthday Leo” or the birthday person’s name on top.

Chill, serve, and store

  • Chill cake 20–30 minutes before slicing for neat layers.
  • Store covered at room temperature up to 2 days or in the fridge up to 5 days. Let come to room temperature 30–60 minutes before serving for best texture.