Preheat oven to 375 degrees F. Coat a 9-by-13-inch glass or ceramic baking dish with cooking spray.Advertisement
To prepare filling: Combine rhubarb, raspberries, granulated sugar, cornstarch and vanilla in the prepared baking dish. Let stand while you make the topping.
To prepare topping: Combine all-purpose flour, rye flour (if using), brown sugar, baking powder and salt in a mixing bowl. Pinch butter into the flour mixture with your fingertips until it is pea-sized. Squeeze a handful of dough firmly in your palm, then crumble it coarsely over the rhubarb mixture. Continue with the rest of the mixture until the fruit is evenly covered. Sprinkle with pecans.
Bake until the fruit is bubbling and the topping is golden brown, about 50 minutes. Let cool for 10 minutes before serving.
1/2 starch, 1 1/2 other carbohydrate, 1/2 fruit, 2 1/2 fat