HOW TO MAKE BOSTON CREAM FILLING RECIPES

Steps:

• Preheat oven to 350 degrees. In a medium mixing bowl combine flour, sugar, baking powder, and salt. Make a well in the center of the flour mixture. Add milk, oil, egg yolks, and vanilla. Beat with an electric mixer on low to medium speed until combined. Beat an additional 3 minutes on high speed and set aside.
• In a large mixing bowl, beat egg whites and cream of tartar on medium to high speed until soft peaks form. Pour the egg yolk mixture over the egg white mixture and fold in. Gently pour the batter into a 9-inch greased pie pan. Bake for 25 to 30 minutes or until the top springs back when lightly touched. Invert the pan onto a wire rack. Cool completely.
• Pastry Cream Filling: In a medium saucepan, heat the milk and vanilla bean to a boil over medium heat. Immediately turn off the heat and set aside to infuse for 10 to 15 minutes. In a bowl, whisk the egg yolks and granulated sugar until light and fluffy. Add the cornstarch and whisk vigorously until no lumps remain. Whisk in 1/4 cup of the hot milk mixture until incorporated. Whisk in the remaining hot milk mixture, reserving the empty saucepan.
• Pour the mixture through a strainer back into the saucepan. Cook over medium-high heat, whisking constantly, until thickened and slowly boiling. Remove from the heat and stir in the butter. Let cool slightly. Cover with plastic wrap, lightly pressing the plastic against the surface to prevent a skin from forming. Chill at least 2 hours or until ready to serve. (The custard can be made up to 24 hours in advance. Refrigerate until 1 hour before using.)
• Ganache: In a medium bowl, pour the boiling cream over the chopped chocolate and stir until melted.
• To assemble pie, remove the cake from the pan. Cut the cake in half horizontally. Place bottom layer on a serving plate or board, and spread with the pastry cream. Top with second cake layer. Pour chocolate ganache over and down the sides of the cake. Store in refrigerator.

Steps:

• For the filling: In a medium saucepan off-heat, whisk together the sugar, cornstarch and salt. Stir in the whole egg and the 3 yolks, and then stir in the milk. Turn the heat on to medium high and cook the mixture, uncovered, stirring constantly, until the custard thickens, 12 to 15 minutes. Remove the pan from the heat and stir in the vanilla. Transfer to a bowl, cover with plastic wrap and refrigerate while you make the cake. Be sure to place the plastic wrap directly onto the custard to prevent a skin from forming.
• For the cake: Preheat the oven to 350 degrees F. Spray a 9-inch round cake pan with cooking spray and set aside.
• Using an electric mixer, cream the butter and sugar together until fluffy, about 5 minutes. Add the egg and mix until completely combined. Sift together the cake flour, baking powder and salt in a bowl. Add the flour mixture to the butter mixture alternating with the milk, beginning and ending with the flour. Add the vanilla.
• Pour the batter into the prepared pan and bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean. Remove the cake from the oven and allow to cool in the pan for 10 minutes, then turn out onto a rack to cool completely, about 20 minutes.
• For the topping: To make the chocolate ganache, in a medium saucepan over medium-high heat, bring the cream to a boil, then immediately remove from the heat. Add the chocolate chips to the cream and stir until completely melted.
• To assemble, slice the cake layer in half horizontally. Spread the custard filling onto one layer, then top with the second layer of cake. Spread the ganache over the top of the cake using an offset spatula or the back of a spoon, allowing it to drizzle down the sides. Refrigerate for at least 2 hours before serving. Store covered in the fridge for up to 2 weeks.