Fresh Blueberry Pie - cooking recipe

Ingredients

1 can blueberry pie filling
1 c. sugar
3 heaping Tbsp. cornstarch
juice of 1/2 large lemon
1 Tbsp. butter
pinch of salt

Preparation

Cook together until thickened.
Cool a little.
Fold in 1 box washed fresh blueberries.
Pour into cool baked pie shell.