Heat olive oil in a 12-inch sauté pan over medium-high heat.
Wash tuna, pat dry, and rub with salt and pepper. Sauté 2 minutes on each side, until seared. Set aside. Tuna should be cooked outside and still raw inside.
Meanwhile, place onions, scallions, and avocado in a medium- to large-sized salad bowl. Cut tuna into 1-inch chunks and add to bowl. Drizzle dressing on top and serve.
Dressing:
In a small saucepan, combine dressing ingredients, and warm over medium-low heat, stirring occasionally.
Recipe Courtesy of QUICK & KOSHER Recipes From The Bride Who Knew Nothing by Jamie Geller (Feldheim 2007) - BUY NOW