Chipotle-Poblano Ketchup:
1 poblano chile
1 cup ketchup
2 chipotle chiles in adobo sauce, seeded and minced
1/2 teaspoon ground cumin
Burgers:
1/2 cup finely chopped sweet onion
1/3 cup wheat germ
1 1/2 teaspoons ancho chile powder
3/4 teaspoon ground cumin
1/2 teaspoon salt
1/4 teaspoon ground red pepper
1 1/2 pounds ground turkey
6 slices cheddar cheese
To Serve:
1/2-inch-thick slices sweet onion
burger rolls, toasted