In this rich, sweet salad, we've included not just onions but their relatives in the Allium family — shallots, leeks, garlic, and chives. For meltingly tender results, be sure to peel off the papery outer layer, the leathery second layer, and any paper-thin membranes from the onions, shallots, and leeks.
• Onions, shallots, and leeks can be roasted 1 day ahead and cooled completely, then chilled, covered. Reheat in a preheated 350°F oven 5 to 10 minutes.
Recipe information
Total Time
1 1/2 hr
Yield
Makes 6 servings
Ingredients
For onion mixture
For salad
Preparation
Make onion mixture:
Step 1
Put oven rack in upper third of oven and preheat oven to 400°F. Line a large shallow baking pan with foil, allowing 2 inches to hang over each end of pan.
Step 2
Wash leek pieces well in a bowl of cold water, then lift out and drain well.
Step 3
Whisk together honey, oil, salt, and pepper and add onions, shallots, and leeks, tossing to coat. Spread onion mixture in an even layer in baking pan. Scatter thyme on top, then cover with another large sheet of foil and crimp edges all around to seal, forming a package.
Step 4
Roast until very tender, about 1 hour. Carefully remove top sheet of foil (steam will emerge) and turn on broiler. Broil onion mixture 5 to 6 inches from heat until tops of onions are browned and caramelized, 2 to 5 minutes. (Check frequently, removing pieces as they brown.) Discard thyme.
Make salad while onion mixture roasts:
Step 5
Whisk together oil, lemon juice, garlic, mustard, salt, and pepper in a large bowl.
Step 6
Trim endives and halve lengthwise. Cut in half crosswise, then cut lengthwise into 1/4-inch-wide strips.
Step 7
Just before serving, add endives to dressing along with spinach and chives and toss until lightly coated. Season with salt and pepper. 3Divide salad among 6 plates and top with warm onion mixture.