SURE. JELL Blackberry Jelly. Substitute. Substitute boysenberries or dewberries for the blackberries. Jam or Jelly Didnt Set Every once in a while, you may find that your jam does not set the way you expected. If your efforts resulted in a runny batch, try our Remake Directions to improve your finished jam. Diabetic Dinner Recipes more. If your jam still doesnt set, you can always use it as a glaze or syrup. Altitude Chart. At altitudes above 1,0. Moist buttermilk muffins studded with blackberries and oat bran ensure you start your day with a healthy and delicious dose of fiber. Find healthy, delicious blackberry recipes, from the food and nutrition experts at EatingWell. Use the darkest, juiciest blackberries you can find to make this glutenfree cobbler. The cornstarch mixed into the fresh fruit acts as a thickener. Fresh blackberry juice, sugar and fruit pectin are cooked briefly then processed in a canner to produce gleaming jars of homemade jelly. Paleo-Blackberry-Blueberry-Cobbler-2.jpg' alt='Blackberry Dessert Recipes Healthy' title='Blackberry Dessert Recipes Healthy' />From crumbles to cheesecakes, make the most of natures free fruit with our selection of blackberry recipes, perfect in cakes, crumbles, yogurts and even savoury dishes. Get all of GMAs favorite recipes from Emeril, Mario and more.