Nutrition per serving may change if servings are adjusted.
Red Onion Dressing
3 tablespoons extra-virgin olive oil
4 cups sliced red onions (2 large onions)
2 teaspoons sugar
1 tablespoon minced garlic
1/4 cup red-wine vinegar
2 tablespoons lime juice
2 teaspoons ground cumin
1/4 cup chopped fresh cilantro
1/4 teaspoon salt, divided
Freshly ground pepper to taste
1 small jícama, peeled and cut into matchsticks (see Note)
2 seedless oranges
1 large red bell pepper, sliced into thin strips
1/4 teaspoon salt, divided
1/4 teaspoon freshly ground pepper, divided
1 pound tuna steak, about 1 inch thick
12 cups torn red leaf lettuce
To prepare dressing: Heat 1 tablespoon oil In a large nonstick skillet over medium-high heat. Add onions and sugar; cook, stirring constantly, until well browned, 10 to 15 minutes. Add garlic and cook for 1 minute more. Let cool to room temperature.
Transfer 1/4 cup of the browned onions to a blender or food processor. Add the remaining 2 tablespoons oil, vinegar, lime juice and cumin; puree until smooth. Add cilantro and pulse to blend. Season with salt and pepper; set aside.
To prepare salad: Preheat grill to medium-high.
Combine jicama with the reserved onions in a large bowl.
With a sharp knife, remove the skin and white pith from oranges and discard. Working over the large bowl to catch juices, cut the orange segments from their surrounding membrane, letting the segments fall into the bowl with the jicama. Squeeze the juice from the membranes into the bowl. Add bell pepper and toss gently to combine. Season with 1/8 teaspoon each salt and pepper.
Season both sides of tuna with the remaining 1/8 teaspoon each salt and pepper. Grill over medium-high heat until just cooked through, 4 to 5 minutes per side. Let rest for 5 minutes before cutting into thin slices. Add the tuna to the jicama mixture.
Toss lettuce with the reserved dressing in a large shallow bowl. Spoon the tuna mixture into the center of the greens and serve.
Make Ahead Tip: Cover and refrigerate the dressing and onions (Steps 1-2) for up to 8 hours.
Note: Jicama is a round root vegetable with thin brown skin and white crunchy flesh. It has a slightly sweet and nutty flavor. To peel it, use a small, sharp knife or vegetable peeler, making sure to remove both the papery brown skin and the layer of fibrous flesh just underneath.
Fish on foil: Fish that flakes easily requires a delicate touch to flip on the grill. If you want to skip turning it over when grilling, measure a piece of foil large enough to hold the fish and coat it with cooking spray. Grill the fish on the foil (without turning) until it flakes easily and reaches an internal temperature of 145°F.
251 calories;8 g fat(1 g sat); 7 g fiber; 23 g carbohydrates; 21 g protein; 70 mcg folate; 29 mg cholesterol; 11 g sugars; 1 g added sugars; 5260 IU vitamin A; 80 mg vitamin C; 75 mg calcium; 2 mg iron; 251 mg sodium; 798 mg potassium
Vitamin C (135% daily value), Vitamin A (105% dv), Potassium (23% dv), Folate (18% dv), Magnesium (17% dv).