Green Apple Salad With Blueberries, Feta, And Walnuts

4 cups mixed salad greens such as leaf lettuce

endive

and radicchio

1 large Granny Smith

cut into small cubes

½ cup chopped walnuts

½ cup crumbled feta cheese

½ cup dried cranberries

2 tablespoons finely chopped green onions

¼ cup vegetable oil

¼ cup blueberries

2 tablespoons extra-virgin olive oil

2 tablespoons balsamic vinegar

¼ teaspoon salt