Rinse and dry greens, and place in a large salad bowl. Add strawberries, blueberries, oranges, cheese, onions, and cooled pecans. Toss gently.
Chill, if desired. Serve with raspberry vinaigrette dressing.
Note: To toast pecans, place them single layer on a cookie sheet or toaster oven pan. Bake in a preheated oven at 350 degrees F. for about 5 minutes or until lightly toasted, being careful not to burn.