2 tablespoons vegetable oil |
2 large onions, halved and cut 1/4-inch thick |
1 teaspoon ancho chili powder |
1/2 teaspoon ground cinnamon |
1/4 cup ketchup |
1/2 cup water |
1/2 teaspoon cayenne sauce |
1/2 teaspoon kosher salt |
1/4 teaspoon freshly ground black pepper |
1/2 cup dijon mustard mixed with 2 tablespoons prepared horseradish |
3 roasted red peppers, julienned |
3 cloves roasted garlic, coarsely chopped |
3 tablespoons extra-virgin olive oil |
2 tablespoons finely chopped fresh flat-leaf parsley |
salt |
freshly ground black pepper |
8 kosher beef hot dogs |
8 good quality hot dog buns, split 3/4 through |