I'm using ground turkey, tomato paste, and chopped onions, bell peppers, and celery that you can buy already chopped up because I've misplaced my snorkel mask. Plus, it makes it faster for a work night. Oh, and I also bought the sloppy joe spices in a package in the spice aisle. All very convenient and inexpensive.
I like to sweat the veggies to get some of the moisture out and to make them more mellow in the sandwiches. Then I let them sit while I do everything else.
Brown the turkey and add water (as per the spice package instructions) which helps to keep from sticking since I don't use any cooking oils in my non-stick Calphelon.
Here's everything before the final mixup and simmer. I believe it's supposed to cook for 15 - 20 minutes. The aroma is divine.