Old Fashioned Pumpkin Slab Pie

INGREDIENTS

3 3/4 cups

all-purpose flour

3 tbsp

granulated sugar

1/2 tsp

kosher salt

1 1/3 cups

unsalted butter, COLD (NOT room temperature), cubed

1 1/3 cups

shortening, COLD (NOT room temperature)

2/3 cup

ice water, plus more as needed

2 tsp

vodka or distilled white vinegar

2 15 ounce cans

pure pumpkin puree

2 14 ounce cans

sweetened condensed milk

eggs

3 tbsp

bourbon

3 tsp

ground cinnamon

1 tsp

Angostura bitters

zest of 1 orange

egg, lightly beaten (for the crust)

raw sugar or sanding sugar, for sprinkling