Easiest Pumpkin Pie Ever - Thanksgiving Recipe.

1 (14.1 oz.) package refrigerated pie crusts
1 1/2 cups plus 2 Tbsp. buttermilk, divided
Parchment paper
1 (15 oz.) can pumpkin
3/4 cup sugar
2 teaspoons ground cinnamon
1/2 teaspoon kosher salt
1 teaspoon vanilla extract
2 large eggs
1 large egg yolk