Rhubarb Strawberry Pie

Rhubarb is in plentiful supply in Sweden and there is even rhubarb candy, which i never had til I came here. Here is a recipe for a typical fruit pie, in this case rhubarb and strawberry, but also rhubarb apple is good.

15 dl or 7.5 cups of chopped fruit
5 Tbl potato or corn starch
1 cup of white sugar divided
1/2 cup of brown sugar
50 dl or about 1/2 stick of margarine, chilled
2 dl or 1 cup of white flour (half of this can be replaced with quick cooking oats if desired)
1 tsp cinnamon

Toss the chopped fruit with starch and 1/2 cup of white sugar
Arrange in the pie plate
Combine the remaining 1/2 cup of white sugar, brown sugar, margarine, flour with oats if you are using that and cinnamon, and pinch it together with your fingers until the entire mixture has a texture as crumbs
Sprinkle the crumb mixture over the fruit and bake for 35-45 minutes at 350 farenheit or 175 celsius.
The fruit mixture will bubble at the sides of the plate and the topping wil take on a brown color.