Lemon juice and zest along with sour cream create a tangy, sweet lemon pie we love.
In a medium size bowl, lightly mix the egg yolks together with a fork and set aside.
In a medium sized saucepan combine the sugar and cornstarch. Whisk in the milk and fresh lemon juice and stir to combine. Cook over medium heat, stirring constantly, until the mixture thickens and starts to bubble.
Reduce the heat to low and cook for a few more minutes. Add a spoonful of the hot lemon mixture into the egg yolks and stir with a fork. (We are tempering the egg yolks with a little of the hot mixture to prepare them before adding to the mixture, and to avoid scrambling the eggs. Add two or three more spoonfuls of the hot mixture to the egg yolks. Now add the egg yolk mixture into the saucepan and stir well to combine. Bring the mixture to a gentle boil and cook for two more minutes. Remove lemon mixture from the heat.
Add the softened butter and lemon zest and stir until the butter melts in. Allow the mixture to cool and then stir in the sour cream. Add filling to your pie shell.
In a mixing bowl of a stand mixer with the whisk attachment (or using a hand mixer) whip the heavy whipping cream. While whipping, add in the sugar and vanilla. Continue beating until stiff peaks form. Spread the whipped cream over the top of lemon pie. Refrigerate for at least 2-3 hours to chill and set before serving. Enjoy!