Peaches

2 onions, sliced, 4 T olive oil, divided, 2 T brown sugar, 1 t cinnamon, 1 t ground ginger,

2 T za'atar spice, 1 t Spanish smoked paprika, 1 t ground cumin, 1 t kosher salt, ½ t ground

2 cloves garlic, peeled, 1 medium shallot, peeled, 1½ pounds peaches, pitted and cut into