You could put this over any tender green.  Spinach or baby kale would work well here, too.

• 6 oz baby portabella mushrooms, sliced
• 1 med-lg leek, halved lengthwise & sliced
• 2 med carrots, thinly sliced
• 3-4 TBLS olive oil
• Salt and pepper to taste
• 1 bag arugula greens, coarsely chopped

Preheat oven to 425. Toss veggies other than arugula with oil, salt, and pepper on large baking sheet. Roast for 15-20 min, stirring once halfway through. Meanwhile mix following ingredients to make a dressing: Juice of 1 lemon ¼ cup olive oil Salt and pepper to taste Put arugula in large bowl and mix in hot roasted veggies and dressing. Serve immediately.