Step 1

Preheat oven to 400°F.

Step 2

Place pie crust on a baking sheet and pour the 1 1/2 cups water into the pie crust.

Step 3

In a small bowl, whisk together the flour, sugar, and salt. Sprinkle evenly over water in the pie crust, but do not stir.

Step 4

Drizzle vanilla over the pie, then evenly place pats of butter over the top.

Step 5

Bake for 30 minutes. Reduce heat to 375°F and continue baking for 30 more minutes. Cover crust with foil if browning too quickly.

Step 6

Pie will be watery but will set up as it cools. Allow to cool to room temperature, then place in fridge to chill before slicing. Enjoy!