Making blueberry pie filling from fresh blueberries, and then using a water bath to can your blueberry pie filling. Has altitude adjustment chart. Every bite of this pie was beyond delicious. I made it using wild maine blueberries which I froze last month. I made the pie vegan simply by substituting vegan butter. An easy blueberry pie recipe with warm spices, lemon and a lattice crust. Plus, tips for making the filling with fresh or frozen blueberries. Mix dry ingredients in saucepan. Add water gradually. Bring to a boil, add blueberries and cook 3 or 4 minutes until clear and thickened, stirring constantly but. Basic Blueberry Pie Filling Recipe. Mix dry ingredients in saucepan. Add water gradually. Bring to a boil, add blueberries and cook 3 or 4 minutes until clear and thickened, stirring constantly but carefully to prevent berries from crushing. Remove from heat, add lemon juice. Use in recipes calling for blueberry pie filling. Im channeling summer today. Cream Cheese Chicken Enchiladas. The temperature may be below freezing outside, but Im dreaming of blueberry pie made with freshpicked summer berries.