Did you know that red onions are a rich source of flavonoids and phenolics, which means they are great antioxidants? We like to throw red onions in the mix whenever possible, and Mario Batali’s Thick-Sliced Onions with Lemon Time is one of our favorite summer grilling recipes. They are great alongside a grilled buffalo New York steak.
Thick-Sliced Onions with Lemon Thyme
Adapted from Mario Batali’s Italian Grill
1/4 cup balsamic vinegar
2 cloves garlic, finely minced
3 tablespoons chopped fresh lemon thyme
2 pounds large red onions
About 1/2 cup extra-virgin olive oil
Kosher salt and freshly ground black pepper
Preheat a gas grill for direct cooking over high heat.
Combine vinegar, garlic and thyme in small saucepan and heat until fragrant and just beginning to steam; don’t let it boil. Remove from heat and let stand for 20 minutes.
Meanwhile, cut onions into 1/2-inch-thick slices and lay out on baking sheet. Brush on both sides with 3 to 4 tablespoons of olive oil and season with salt and pepper.
Place onions on hottest part of grill and cook, unmoved, for 4 to 5 minutes, until just charred on first side. Turn and cook for 3 to 4 minutes more, or until softened and lightly charred on the second side. Transfer to baking sheet or platter.
Whisk remaining 1/4 cup olive oil into vinegar mixture and drizzle over onions. Serve warm or at room temperature.