1 vanilla wafer pie crust (9 1/2-inch deep dish) .
1 large egg .
1 c cold whipping cream .
1 c sugar .
1/3 c powdered sugar, sifted .
1/4 tsp vanilla extract .
2/3 c fresh lemon juice .
Filling .
powdered sugar
Directions
Step #1 Prebake vanilla wafer crust & let cool as directed; put in the fridge until ready to use.
Step #2 Place enough water in the bottom of a double boiler to reach almost to the bottom of the insert; bring water to an active simmer.
Step #3 Place the egg & egg yolks in the top of the double boiler & as soon as possible start to whisk, lemon juice, slowly adding the sugar, & lemon zest.
Step #4 With the water at an active simmer, 12-14 mins (it should be thick enough that when you stick a tsp in it & blow on the spoon for several seconds, continue to whisk until the mixture is noticeably thicker, the mixture pretty much stays on the spoon when you turn it upside down).
Step #5 Whisk in the butter, one piece at a time, adding each piece only after the previous one has melted.
Step #6 After the last piece of butter has melted, continue to whisk & cook for 1 min.
Step #7 Scrape the curd into a medium bowl; press a piece of plastic wrap directly over the surface so the curd doesn’t form a skin; let cool to about room temp, the put in the fridge for 2 hrs.
Step #8 At least 2 hrs before serving, make the topping: using a chilled bowl & chilled beaters, beat the cream with an electric mixer until it holds soft peaks.
Step #9 Add in the powdered sugar & vanilla & continue to beat until stiff but not grainy (do not overbeat).
Step #10 Spoon 2/3 of the lemon curd into the cream & beat on lowish speed just until uniformly mixed.
Step #11 Spread the remaining 1/3 lemon curd evenly in the chilled pie shell & slightly up the sides.
Step #12 Spoon the lemon whipped cream over the curd, spreading it evenly.
Step #13 Cover up the pie with loosely tented foil wrap & put in the fridge for at least 2 hrs.
Step #14 Dust the top of the pie generously with the powdered sugar & serve.
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