Step 1

Preheat the oven to 350°F.

Step 2

In a saucepan, combine the raisins and water and bring to a boil. Boil for 5 minutes.

Step 3

In a small bowl, whisk together the brown sugar, cornstarch, cinnamon, and salt. Add to the hot raisins mixture.

Step 4

Continue to cook stirring regularly until the syrup is clear and the mixture has thickened. About 7-10 minutes.

Step 5

Remove the saucepan from the heat. Stir in the vinegar and butter. Let the pie filling cool slightly, approximately 10 minutes.

Step 6

Pour the raisin filling into a pie crust lined pie dish. Cover with the top crust. Seal the edges and cut a couple of small slits in the top crust for venting.

Step 7

Bake for 30 to 35 minutes or until the top is golden brown.