Preheat oven to 375 degrees. Combine the rhubarb and strawberries in a 9'' square pan. Sprinkle with sugar. Mix together remaining ingredients in a medium sized bowl. Distribute over the top of the fruit and pat firmly into place. Bake uncovered for 35-40 minutes or until the top is crsip and lightly browned, and the fruit is bubbling around the edges. Serve hot, warm or room temperature. Don't forget to top with vanilla ice cream!