How do you keep strawberry rhubarb pie from being runny?
It depends on the fruit! The flour and sugar in the filling will thicken as it cooks, but if your strawberries are really ripe and juicy, you may need an extra tablespoon of flour. Alternatively, if at the end of baking the sides of the pan are bubbly but most of the center is still really runny, add 5 to 10 extra minutes on to the baking time.