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boston cream filling recipe

Dreamy Boston Cream Filling

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This silky-smooth Boston cream filling strikes the perfect balance between pudding and custard with its rich vanilla flavor. Incredibly versatile, this classic custard can be used in donuts, cakes, or tarts for an irresistible dessert that's surprisingly simple to make.
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Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings: 8 servings
Course: Dessert
Cuisine: American
Calories: 165
Ingredients Equipment Method Nutrition Notes

Ingredients
  

  • 4 egg yolks
  • 1/4 cup cornstarch
  • 2 cups milk
  • 1/4 teaspoon salt
  • 1/2 cup sugar
  • 1 teaspoon vanilla extract pure, not imitation
  • 1 cup whipped cream optional, for lighter texture
  • 2 ounces baking chocolate optional, for chocolate variation

Equipment

  • Medium saucepan
  • Wire whisk
  • Mixing bowl

Method
 

  1. In a medium saucepan, thoroughly whisk together the sugar, cornstarch, and salt until well combined to prevent lumps.
  2. Add the milk, egg yolks, and vanilla extract to the saucepan. Whisk until the mixture is completely smooth.
  3. Place the saucepan over medium heat and stir constantly as the mixture cooks, about 5-8 minutes. Continue stirring until the custard thickens enough to coat the back of a spoon.
  4. Once thickened, remove from heat and transfer to a bowl. Place plastic wrap directly on the surface of the custard to prevent a skin from forming.
  5. Refrigerate until completely cooled before using.
  6. For variations: If desired, fold in whipped cream after cooling for a lighter texture, or stir in melted baking chocolate for a chocolate version.

Nutrition

Calories: 165kcal

Notes

This Boston cream filling will keep in the refrigerator for up to 3 days when stored in an airtight container. For the smoothest texture, use room temperature eggs and gradually add the milk while whisking to prevent lumps. This versatile filling works beautifully in Boston cream pie, donuts, eclairs, cream puffs, or layered in parfaits with fresh berries.
If your custard accidentally develops lumps, you can strain it through a fine-mesh sieve while still warm to restore its silky texture.

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