2 large red onions (about 1 pound) |
1/4 cup honey mustard |
3 tablespoons low-sodium soy sauce |
3 tablespoons lemon juice |
3 tablespoons brown sugar |
1 teaspoon vegetable oil |
1/2 teaspoon ground red pepper |
1/2 teaspoon black pepper |
1/8 teaspoon salt |
4 small zucchini, each cut lengthwise into 1/4-inch-thick slices (about 1 pound) |
4 (6-ounce) salmon steaks (1 inch thick) |
cooking spray |