Directions:

1 pre-made pie crust
1 large egg
1 cup sugar
2 tablespoons all-purpose flour
1 teaspoon vanilla extract
3/4 pound rhubarb ribs, cut into 1/2-inch pieces, or sliced frozen rhubarb (about 3 cups)
1 pint fresh strawberries, halved

TOPPING:
3/4 cup all-purpose flour
1/2 cup packed brown sugar
1/2 cup quick-cooking or old-fashioned oats
1/2 cup cold butter, cubed

***Used 2 cans of rhubarb in strawberry sauce, drained. Mixed with 2 lbs (large container) of strawberries. Added about 1/2 tsp cornstarch.***

Preheat oven to 400°. On a lightly floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim crust to 1/2 in. beyond rim of plate; flute edge.
In a large bowl, beat egg. Beat in sugar, flour and vanilla until well blended. Gently stir in rhubarb and strawberries. Pour into crust. For topping, in a small bowl, combine flour, brown sugar and oats; cut in butter until crumbly. Sprinkle over fruit.
Bake 10 minutes. Reduce heat to 350°; bake until crust is golden brown and filling is bubbly, about 35 minutes longer. Cool on a wire rack.