Cut 1/4-inch slice off top and bottom of each onion and discard. Cut onions in half crosswise. Arrange onions in single layer in shallow dish.
Whisk Worcestershire, vinegar, soy sauce, pepper, and oil in bowl. Pour over onions. Let stand at room temperature 1 hour, basting occasionally.
Prepare barbecue (medium-high heat). Arrange onions on grill. Cover grill and cook onions until brown, basting occasionally, about 4 minutes per side. Using large spatula, transfer onions to platter.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.