Make pie crust. {Or unwrap, if cheating!} Arrange in a pie dish. {At this point, I pierced it a bunch of times with a fork just to make sure it didn't puff during baking. It may not be necessary because there's a filling, but I didn't want to risk it.} Refrigerate until needed. Preheat oven to 350 degrees.
In a large bowl, whisk together flour, sugar, and salt.
In a medium bowl, whisk together eggs, melted butter, bourbon, and vanilla extract.
Add wet ingredients to dry and whisk until just combined. Gently mix in walnuts and chocolate chips.
Pour mixture into unbaked pie crust. Bake for 40-45 minutes until the top is slightly puffed and lightly golden, and a toothpick inserted into the pie comes out mostly clean. {Not super batter-y.}
Cool before slicing. Serve with a dollop of fresh whipped cream and a sprig of mint if desired.