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Boston Cream Pie Cookies

These Boston Cream Pie Cookies combine the delicious flavors of vanilla butter cookies, creamy pastry filling, and rich chocolate ganache, all in a hand-held treat that's easy to enjoy.
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Prep Time 30 minutes
Cook Time 25 minutes
Total Time 1 hour 30 minutes
Servings: 18 cookies
Course: Dessert, Snack
Cuisine: American
Calories: 250
Ingredients Method Notes

Ingredients
  

For the Vanilla Butter Cookies
  • 1 cup unsalted butter, softened to room temperature
  • 3/4 cup granulated white sugar
  • 1/4 cup packed light brown sugar
  • 2 large eggs, room temperature
  • 2 teaspoons pure vanilla extract
  • 2 and 1/4 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/4 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 tablespoons sour cream for tenderness and moisture
For the Vanilla Pastry Cream Filling
  • 1 and 1/2 cups whole milk
  • 4 large egg yolks
  • 1/3 cup granulated white sugar
  • 3 tablespoons cornstarch
  • 2 tablespoons unsalted butter
  • 1 and 1/2 teaspoons pure vanilla extract
  • Pinch of salt
For the Chocolate Ganache Dip
  • 3/4 cup semi-sweet or dark chocolate chips
  • 1/2 cup heavy cream
  • 1 tablespoon unsalted butter for gloss and smoothness
  • 1 teaspoon light corn syrup or golden syrup optional — prevents crystallization and keeps the ganache shiny

Method
 

Make the Vanilla Pastry Cream
  1. Warm the whole milk in a medium saucepan over medium heat until it just begins to steam and tiny bubbles appear around the edges — do not boil it.
  2. While the milk warms, whisk together the egg yolks, granulated sugar, cornstarch, and pinch of salt in a mixing bowl until it looks pale yellow and slightly thickened.
  3. Once the milk is hot, pour about a third of it slowly into the egg yolk mixture while whisking constantly.
  4. Then pour in another third, whisk again, and finally pour the entire tempered mixture back into the saucepan with the remaining hot milk.
  5. Return the saucepan to medium heat, stirring constantly until the mixture thickens — about 3–4 minutes.
  6. Remove from heat, and stir in butter and vanilla extract until smooth. Press cling film against the surface and refrigerate for at least 30 minutes.
Make the Cookie Dough and Bake
  1. Preheat the oven to 350°F (175°C) and line baking sheets with parchment paper.
  2. Cream the softened butter with both sugars for about 3 minutes until light and fluffy.
  3. Add the eggs one by one, followed by vanilla extract and sour cream, mixing until smooth.
  4. Add the dry ingredients (flour, baking powder, baking soda, and salt) and gently fold until just combined.
  5. Portion dough into small balls and bake for 11–13 minutes until edges are set and golden.
  6. Transfer cookies to a wire rack and cool completely before assembling.
Make the Chocolate Ganache
  1. Place chocolate chips and corn syrup in a heatproof bowl.
  2. Heat the heavy cream in a small saucepan until it just simmers, then pour over the chocolate chips and let sit for 2 minutes.
  3. Stir slowly until smooth, then add butter and stir until melted. Allow to cool at room temperature for 10–15 minutes.
Assemble the Boston Cream Pie Cookies
  1. Match cookies into pairs for uniformity.
  2. Pipe pastry cream onto one cookie and press a second cookie on top.
  3. Dip one side of each cookie into the ganache, letting the excess drip off.
  4. Refrigerate for about 20 minutes until the ganache sets.

Notes

Store assembled cookies in an airtight container in the fridge for up to 4 days. Pastry cream can be prepared up to 2 days in advance.