add 3 cups of fresh blueberries
Mix the following in a bowl and pour over berries in pie shell
1/3C all purpose flour
1/2C sour cream
Mix the following until crumbly and scatter over pie.
1/4C soften butter (not melted)
Bake at 350 for 1 hour. Sometimes a few more minutes to get a nice golden brown color. Pie tends to drip, so place something beneath it as it bakes.