Boston Cream Cupcakes (Print Version)

# Ingredients:

→ Pastry Cream Filling

01 - ¼ cup granulated sugar
02 - 1 tablespoon cornstarch
03 - 1 cup whole milk
04 - 2 large egg yolks
05 - 1 tablespoon unsalted butter
06 - 1 teaspoon pure vanilla extract

→ Vanilla Cupcakes

07 - 13.25 ounces yellow cake mix
08 - 1 cup water
09 - ⅓ cup unsalted butter, melted
10 - 3 large eggs

→ Chocolate Ganache Topping

11 - ½ cup semisweet chocolate chips
12 - ¼ cup heavy cream
13 - 2 tablespoons powdered sugar

# Instructions:

01 - In a large saucepan, whisk together sugar, cornstarch, and milk until smooth. Cook over medium heat, stirring constantly, until the mixture thickens and starts to bubble. Let it simmer for 1 minute, then remove from heat.
02 - Slowly whisk a small amount of the hot milk mixture into the egg yolks to warm them up. Then pour this egg mixture back into the saucepan, whisking constantly to prevent scrambling.
03 - Return the pan to medium heat and bring to a gentle boil. Cook for 2 minutes, stirring continuously. Remove from heat and stir in butter and vanilla until smooth. Let cool to room temperature.
04 - Preheat oven to 350°F and line two 12-cup muffin tins with paper liners. Mix cake mix, water, melted butter, and eggs until just combined. Fill liners halfway and bake for 15 minutes until a toothpick comes out clean. Cool completely.
05 - Combine chocolate chips and heavy cream in a microwave-safe bowl. Heat in 15-second intervals until chocolate melts completely. Sift in powdered sugar and let cool for 10 minutes until it thickens.
06 - Use a knife to cut out the center of each cupcake about 1 inch wide and 1 inch deep. Fill each hollow with pastry cream using a piping bag or spoon. Top each cupcake with a generous dollop of chocolate ganache.

# Notes:

01 - Cut cupcake centers about 1 inch wide and 1 inch deep for the perfect cream-to-cake ratio
02 - Use a piping bag for neater filling - gives better control than spooning cream into cupcakes
03 - Let ganache cool for 10-15 minutes before topping to achieve the perfect thick consistency
04 - Store finished cupcakes in refrigerator for up to 4 days - freezing not recommended due to cream filling