To make the pie, preheat the oven to 400 degrees F. In a large saucepan, bring 4 cups frozen blueberries and 1 cup granulated sugar to a boil over medium-high heat. Stir/fold gently until the ...

Spoon filling into pie crust. Crumble topping over filling, completely covering the berries. Place pie on a cookie sheet (helps cook the bottom) and bake in oven for 45 minutes.