Roasted Red Onion Salad with Dijon Balsamic Dressing

Although this salad is really quite season-less, it seems particularly well suited to these cold winter months.  The red onions, deeply caramelized in a hot oven, are a wonderful match for the buttery Manchego cheese and crispy pine nuts.

The recipe will make twice the dressing that you need so store it into a recycled bottle in the frig and use it on any salad you make this week…it’s an all-around great vinaigrette.  If you happen to have the grill fired up, you can grill the onions in about half the time that it takes to roast them.

Roasted Red Onion Salad with Dijon Balsamic Dressing

Serves 8-12
By author margaret at The Right Recipe


  • 3 tablespoons Dijon mustard
  • 3 tablespoons balsamic vinegar
  • 1/2 cup olive oil
  • 1/2 cup vegetable oil
  • 1/4 teaspoon salt and pepper (each)
  • 2 Large red onions (peeled and cut into 1/2 inch slices)
  • olive oil (to brush onions before roasting)
  • 5oz baby arugula (washed and dried)
  • 1 head red leaf variety of lettuce (washed, dried and torn into bite sized pieces)
  • 1/2 cup pinenuts (lightly toasted in a dry skillet, pay attention)
  • 1/2 cup manchego cheese shavings (use a vegetable peeler)


1. In a medium bowl, whisk together the mustard and the vinegar. Slowly add both oils, while whisking, until incorporated. Add salt and pepper. Set aside at room temperature.
2. Preheat oven to 400 degrees. Brush both sides of the onion slices with olive oil and season lightly with salt and pepper. Place on a rimmed baking sheet, in a single layer, and roast 15-20 minutes, turning once half way through. The onions should have caramelized brown edges and be very soft in the middle. Remove from baking sheet to a cutting board and let cool. When cool, cut into bite sized pieces.
3. In a large bowl, toss both lettuces with the onions and toasted pine nuts. Drizzle with the Dijon balsamic dressing and toss again. Sprinkle with cheese shavings and serve.


Dijon Balsamic Vinaigrette


  • Reply
    Thalia @ butter and brioche
    January 28, 2015 at 10:37 pm

    I love roasted veggie salads.. and this one is perfect for me to make. That dijon balsamic dressing especially is calling my name!

  • Reply
    Lisa Millican
    January 21, 2015 at 8:15 pm

    So glad you posted this!! It was so good. Especially with the grilled onions. Will definitely make this!

  • Reply
    January 20, 2015 at 8:13 pm

    The salad dressing looks wonderful.

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