Pickled Peach Turkey Burgers... just try them!

I haven't made these in awhile.  I misplaced the recipe somewhere, but I have found it again and will be making these very soon!  They are soooo good!

Grilled Turkey Burgers with Pickled Peaches

Makes 4 Burgers

Ingredients:
3 peaches, peeled, pitted, and chopped
1 red onion, cut in half, half finely chopped, half sliced lengthwise
2 Tbs apple cider vinegar
2 Tbs water
2 Tbs brown mustard, divided (I like the grainy kind for this)
1 Tbs sugar (I use Splenda)
Salt & Pepper to taste
Grill Seasoning to taste (I use Montreal Steak seasoning)
2 tsp EVOO
1 1/2 lb ground turkey
fresh spinach
2 Tbs chopped parsley
whole wheat pita bread

Put peaches, sliced onions, vinegar, water, 1/2 of the mustard, Splenda, salt & pepper into a small pot and bring to a boil over med-high heat. Reduce heat to med-low and simmer until liquid is thickened and peaches are very tender and starting to come apart (7-10 minutes.) Remove from heat and set aside to cool.
Grease grill pan with oil and preheat to med-high. In a bowl combine turkey, chopped onion, chopped parsley, remaining mustard, and grill seasoning. I usually use a fork to mix the meat, it gets everything mixed well without having to put your hands in it. Divide meat into four sections and form patties. I found that it works better if you make them into oval shapes, this way you don't have lots of excess bread around the meat. Grill, flipping once, until golden brown (about 10 mins.)
Tuck spinach into pitas, cut burgers lengthwise down the middle and add to pitas. Top with peaches.