Fireball Pumpkin Pie

Name: Fireball Pumpkin Pie
Prep time: 20 min
Total time: 20 min
Cuisine: American
Ingredients: 1 1/2 c. all-purpose flour; 1/2 c. (1 stick) butter, cut into 1/2" pieces; 1 tbsp. granulated sugar; 1/4 tsp. kosher salt; 1/2 tbsp. apple cider vinegar; 4 tbsp. ice water (or more, if needed); 1 (15-oz.) can pumpkin purée; 1 1/4 c. heavy cream; 1/4 c. Fireball whisky; 3/4 c. packed light brown sugar; 3 large eggs, beaten; 1 tbsp. all-purpose flour; 2 tsp. pumpkin pie spice; 1 tsp. pure vanilla extract; Whipped topping, for serving; Cinnamon, for garnish