Isn't the crabapple without the added sugar tart/sour? Just adding the raw juice to your beer is going to make it taste like the raw juice, not the jelly that has sugar added.
Do you have a kegging setup? This sounds like it would be delicious if you could use it as a backsweetening addition with sugar.
Primary #1 - Midnight Ryeder (Midnight Wheat and Rye)
Primary #2 - Florida Weiss
Primary #3 - Kane-DOH APA (Honey Citra APA)
Secondary #1 - Downtown Flanders Brown (brewed August 2012)
Keg #1 - Raspberry Florida Weiss
Keg #2 - Cinnamon Raisin Cider
Keg #3 - NONE!
Bottled - NONE!