Strawberry Rhubarb Crisp

4 cups rhubarb, diced
2 cups strawberries, chopped
1 cup sugar
1/3 cup of flour
1 package Halladay's Apple Crisp mix
Combine rhubarb and strawberries, into sugar and flour mixture. Pour mixture into 9" baking dish. Top with Halladay's mix. Bake according to package directions.