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Classic Boston Cream Pie Cake

Classic Boston Cream Pie Cake: A Must-Try Delight!


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  • Author: HearthMuse
  • Total Time: 1 hour 35 minutes
  • Yield: 8 servings 1x
  • Diet: Vegetarian

Description

This elegant dessert combines the best of both worlds — the lightness of a sponge cake and the richness of a cream pie. The soft vanilla layers cradle a smooth custard filling, all crowned with glossy chocolate ganache. A true American classic that never goes out of style.


Ingredients

Scale
  • 1½ cups (190 g) all-purpose flour
  • 1½ tsp baking powder
  • ¼ tsp salt
  • ½ cup (115 g) unsalted butter, softened
  • 1 cup (200 g) granulated sugar
  • 2 large eggs
  • 1½ tsp vanilla extract
  • ½ cup (120 ml) whole milk
  • ¼ cup (60 ml) heavy cream
  • 2 cups (480 ml) whole milk (for pastry cream)
  • ½ cup (100 g) granulated sugar (for pastry cream)
  • ¼ cup (30 g) cornstarch
  • 4 large egg yolks
  • 1½ tsp vanilla extract (for pastry cream)
  • 2 tbsp unsalted butter (for pastry cream)
  • 1 cup (170 g) semisweet or dark chocolate chips
  • ½ cup (120 ml) heavy cream (for ganache)
  • 1 tbsp butter (optional, for shine)

Instructions

  1. Preheat oven to 175°C (350°F). Grease and line two 8-inch (20 cm) round pans.
  2. In a bowl, whisk together flour, baking powder, and salt.
  3. In another bowl, beat butter and sugar until light and fluffy (about 2–3 minutes).
  4. Add eggs, one at a time, then mix in vanilla extract.
  5. Alternate adding dry ingredients with milk and cream, beginning and ending with dry.
  6. Divide batter between pans and bake for 22–25 minutes, or until golden and springy. Cool completely before assembling.
  7. In a saucepan, whisk egg yolks, sugar, and cornstarch until smooth.
  8. Heat milk until steaming (not boiling), then slowly pour into the yolk mixture while whisking.
  9. Return mixture to heat and cook until thickened (about 3–5 minutes).
  10. Remove from heat, stir in butter and vanilla until glossy. Cover with plastic wrap directly on the surface and chill completely.
  11. Heat cream until hot (do not boil). Pour over chocolate chips and let sit 1 minute.
  12. Stir until smooth and glossy. Add butter if desired. Cool slightly before pouring.
  13. Place one cake layer on a serving plate. Spread the pastry cream evenly over the surface. Top with the second cake layer.
  14. Pour chocolate ganache over the top, letting it drip down naturally. Chill for 30 minutes before serving.

Notes

  • Ensure the cake layers are completely cool before assembling to prevent the pastry cream from melting.
  • For a richer ganache, use high-quality chocolate.
  • This cake can be made a day in advance and stored in the refrigerator.
  • Prep Time: 25 minutes
  • Cook Time: 25 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 350
  • Sugar: 25g
  • Sodium: 150mg
  • Fat: 20g
  • Saturated Fat: 10g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 40g
  • Fiber: 1g
  • Protein: 5g
  • Cholesterol: 80mg