
FILLING
1. 1 3/4 pounds rhubarb stalks, sliced 1/2 inch thick
2. 1 1/4 cups sugar
3. 11/4 pounds strawberries, hulled and quartered
4. 3 tablespoons cornstarch
5. 2 teaspoons fresh lemon or lime juice
TOPPING
1. 1 stick (4 ounces) unsalted butter, softened
2. 1 1/2 cups light brown sugar
3. 1 1/2 cups all-purpose flour
4. 1 1/4 cups quick-cooking rolled oats
5. 3 tablespoons canola oil
6. 1 1/2 teaspoons cinnamon
7. 3/4 teaspoon salt