Easy Old Fashioned Blueberry Pie

Ingredients
12 oz. blueberries
1/2 cup sugar
1 tablespoon flour
1/4 cup butter
1- 9 inch unbaked pie crust

Directions
Preheat oven to 350 degrees.

In a large sauce pan combine blueberries, sugar, flour, and butter; bring to boil and reduce heat to simmer. Simmer berries for 10 to 15 minutes until thickened. Pour berry mixture into unbaked pie crust. Bake pie for 30 minutes or until golden brown.