Raspberry, Avocado & Mango Salad

fresh raspberries, divided

extra-virgin olive oil

red-wine vinegar

small clove garlic, coarsely chopped

kosher salt

freshly ground pepper

mixed salad greens

ripe mango, diced (see Tip)

small ripe avocado, diced

thinly sliced red onion

toasted chopped hazelnuts, or sliced almonds, optional