I tried to glue it back together, but the surface area was so small that it didn't hold.
Then I tried using a small piece of metal epoxied to the top for strength. That held, but I didn't think that it would last, so I ordered a new set of handles. Appliance Parts Pro's had the best overall price even with the shipping. It arrived in less than a week and replaced the handle(s) perfectly. Very satisfied. I used both new handles and simply had to screw them into place.