Allow 3 hours from start to table. Preheat oven to 325. The fruit can be fresh or frozen.
In a large pot, place 5c. chopped rhubarb and 4c. chopped strawberries and enough water to cover. Bring to a boil. Remove about 2 c. of the berries and rhubarb, draining the liquid back into the pan. Set aside until serving. Continue to boil the rest in the covered pot for 5 minutes more, then drain and set aside to be added in the sauce.
Make a rub with 2 T salt, 2 T paprika, 1 T pepper, and rub on 3-4 lbs boneless country-style ribs.
Brown them in batches ( not letting sides touch) and place in a 3-4 qt baking dish. In the remaining oil, sauté 1 chopped onion for 3-4 minutes ( adding a little more oil if needed) and then adding
1 cup packed brown sugar or brown-sugar replacement
Bring to a boil, and pour over the ribs. Cover and bake 2 hours, then uncover for another 30 minutes. Remove a cup or two of the delicious sauce and mix it with the reserved rhubarb and strawberries, and serve it over or with the ribs.