This is such a delicious recipe that is sure to be a staple for summer parties and picnics. Make the crust thicker to make bars or thinner to make it more like a pie. Either way, gotta love a good strawberry rhubarb recipe.
To make the crumble, mix together flour, sugar, baking powder, and salt. With a pastry blender, blend in butter and egg until the mixture is mixed and crumbly. Half the recipe if you want a thinner crust.
Press some of the crumble to the bottom of a 7x11 dish. The thicker the crust, the more like a bar your dessert will be.
In a medium bowl, combine 4 cups rhubarb and 2 cups strawberries with 1/2 cup sugar, 1 1/2 tbsp cornstarch, and 1 tsp vanilla. Mix until all the fruit is coated with the sugar mixture.
Add the fruit mixture to the crust and top with crumble. Refridgerate any unused crumble for another recipe.
Bake for 45-55 minutes or until the strawberry rhubarb is bubbly and top is golden.