Get the Ingredients needed for this Recipe HERE
Make the Crust:
- Process the zuppalatte cookies in a food processor until they form fine crumbs.
- Transfer the crumbs to a bowl and mix with the melted butter until evenly combined.
- Press the mixture firmly into the bottom and sides of a loose-bottom tart pan.
- Place in the freezer for at least 30 minutes to set.
Make the Diplomat Cream:
- In a bowl, whisk together the milk, beaten egg yolks, and vanilla.
- In a saucepan, whisk together the sugar and cornstarch.
- Place the pot over medium heat and gradually add the milk mixture while whisking continuously.
- Add the lemon peel and continue stirring with a wooden spoon.
- After about 5–7 minutes, the mixture will thicken into a smooth custard.
- Remove from the heat, discard the lemon peel, and stir for another 30 seconds.
- Transfer the custard to a shallow baking dish, cover with plastic wrap pressed directly onto the surface (to prevent a skin from forming), and refrigerate until completely cooled.
- In a separate bowl, whip the heavy cream and confectioners sugar with an electric mixer until stiff peaks form.
- Once the custard is cooled, fold in the whipped cream, reserving about 6 tablespoons. Beat briefly with the mixer for a smoother, airy consistency.