Thick asparagus is easier to roast.
In a large bowl soak the sliced onions in lemon juice. Set aside. Preheat the oven to 400°F. Coat the asparagus spears with olive oil cooking spray and salt them well. Place in a single layer in a foil-lined roasting pan and cook for 8-10 minutes until lightly browned and fork tender. Remove the asparagus from the oven and cut into bite-sized pieces. Add the asparagus and all the remaining ingredients to the bowl with the onions and lemon juice. Mix to combine. Serve chilled or at room temperature. Notes: Thick asparagus is easier to roast. Each serving has 3 grams of fat and 10 grams of carbohydrates. No protein.