Great recipe! I've never made jam before and this worked out wonderful. Didn't have a food mill so had to improvise, a little messy but the taste is yummy. Didn't have granny smiths so used honeycrisp, also used a cinnamon stick instead of powder.
Low-Sugar Plum Spread
This simple homemade fruit spread has less than one-fourth the calories and one-third the carbohydrate grams of a common commercial variety (you can trim those numbers even further by opting for no-calorie sweetener). Cooking the plums in fruit juice with apples allows you to sweeten the spread without an excessive amount of sugar and take advantage of the natural pectin in the fruit. This method also works well with strawberries, blackberries or peaches.