Preheat the oven to 400 degrees.
Coat a roasting pan with cooking spray.
Slice the tenderloins on the diagonal into 1 ½-inch slices and place in the pan.
Pour the melted butter evenly over each tenderloin.
Place in the oven and bake for 5 minutes.
In a small mixing bowl, combine the jelly and vinegar.
Pour over the tenderloins and bake an additional 15 minutes or until the thickest part of the tenderloin reaches 160 degrees on a meat thermometer.
Remove the meat from the oven.
Place the tenderloins on a platter.
Pour the sauce from the pan into a serving bowl.
Let the meat sit for 10 minutes before slicing, and pass the sauce.