Salads with walnuts

1 large pear , chopped 2 teaspoons butter 1 tablespoon brown sugar 1 large red onion , chopped 2 teaspoons olive oil 2 teaspoons balsamic vinegar 1 tablespoon[...]

6 1/2 ounces tuna light, drained 1/4 cup celery finely diced 3 tablespoons walnuts chopped 3 tablespoons parsley leaves chopped 1/4 cup onion finely minced 1[...]