Rhubarb Mango Pie

1. Preheat oven to 350ºF.
2. Place one pie shell in the bottom of pie plate. Prick bottom with fork.
3. In a large bowl, combine the fruit, sugar, flour and vanilla.
4. Pour the fruit filling into bottom of the pie plate.
5. Top the fruit with cubes of butter.
6. Top with the second pie shell. You can either use the whole shell and cut slits into the top or cut the 7. dough into strips and create a lattice topping.
7. Brush the top with the egg white.
8. Bake in preheated oven for 30-40 minutes until bubbling and brown.