Marinate steak and prepare onions: Stir together garlic, 3 tablespoons vinegar, 1 1/2 tablespoons oil, 1 1/2 teaspoons salt, and 1/2 teaspoon black pepper and pour into a 1-quart sealable plastic bag.
Add steak to marinade, turning to coat, and marinate, chilled, turning bag occasionally, at least 4 hours.
Bring to room temperature, then remove steak from marinade and discard marinade.
Trim root ends of onions slightly, leaving them intact, then halve lengthwise and cut halves lengthwise into 3/4-inch-thick wedges. Insert 1 wooden pick horizontally through each wedge (to keep it intact while grilling). Whisk together remaining tablespoon vinegar and 1 1/2 tablespoons oil and salt and pepper to taste in a bowl and add onions, tossing gently to coat.
To cook steak using a charcoal grill: Open vents on bottom of grill. Light a large chimney starter of charcoal (80 to 100 briquettes) and pour lit charcoal onto bottom rack, leaving about one quarter of bottom rack free of charcoal and banking remaining coals across rest of bottom rack so that coals are about 3 times higher on opposite side. Charcoal fire is medium-hot when you can hold your hand 5 inches above thickest layer of coals for 3 to 4 seconds. 3Sear steak on lightly oiled grill rack over thickest layer of coals, uncovered, 1 minute on each side, then move steak to area over fewer coals and grill, uncovered, turning occasionally and moving to coolest area of grill if browning too quickly, until thermometer inserted horizontally 2 inches into meat registers 120°F, 10 to 12 minutes. Transfer to a plate and let stand 10 minutes (steak will continue to cook, reaching medium-rare).
To cook steak using a gas grill: Preheat all burners on high, covered, 10 minutes.
Sear steak on lightly oiled grill rack, uncovered, 1 minute on each side, then reduce heat to moderate. Grill steak, covered, turning occasionally, until thermometer inserted horizontally 2 inches into meat registers 120°F, 10 to 12 minutes. Transfer to a plate and let stand 10 minutes (steak will continue to cook, reaching medium-rare).
To grill onions by either method: While steak is standing, grill onions (covered only if using a gas grill) over moderate heat, turning over once, until tender, about 6 minutes.
Serve onions with steak; cut steak crosswise into thin slices, holding knife at a 45-degree angle.
Cooks' notes: ·Steak can marinate up to 1 day. ·If you aren't able to grill outdoors, steak and onions can be cooked, separately, in a hot lightly oiled well-seasoned ridged grill pan over moderately high heat, turning once and lowering heat if necessary, about 15 minutes total for steak and 6 minutes for onions.

Kitchen-Friendly View

Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	132.32 Kcal (554 kJ)
Calories from fat	94.77 Kcal
		% Daily Value*
Total Fat	10.53g	16%
Sodium	6.28mg	0%
Potassium	106.53mg	2%
Total Carbs	8.42g	3%
Sugars	4.52g	18%
Dietary Fiber	1.11g	4%
Protein	0.71g	1%
Vitamin C	4.6mg	8%
Iron	0.2mg	1%
Calcium	21.8mg	2%

Amount Per 100 g
Calories	161.48 Kcal (676 kJ)
Calories from fat	115.66 Kcal
		% Daily Value*
Total Fat	12.85g	16%
Sodium	7.66mg	0%
Potassium	130.01mg	2%
Total Carbs	10.28g	3%
Sugars	5.52g	18%
Dietary Fiber	1.35g	4%
Protein	0.86g	1%
Vitamin C	5.6mg	8%
Iron	0.3mg	1%
Calcium	26.6mg	2%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

Search recipes
by ingredients

Construct & Analyze
Your Recipe

Analyze

Try this similar recipes

Chilled Salmon With Summer Tomato Salsa

Salmon, skin removed, Chopped fresh tomato and 9 more..
Orange Pork Tenderloin

Garlic cloves, chopped, Balsamic vinegar and 9 more..
Roasted Chicken with Caramelized Onions

Heads of garlic, cloves separated and peeled, Whole milk and 9 more..
Thanksgiving for 10: New Pasta Salad

Garlic, minced, Balsamic vinegar, Olive oil and 2 more..
Balsamic Roasted Garlic

Peeled garlic cloves (from about 3 heads garlic) and 4 more..
Artichoke Saute

Head garlic, Boiling water, Olive oil and 9 more..