Spinach-Cucumber Salad

1 medium cucumber
1/2 cup bottled herb salad dressing
10 ounces spinach
1/2 cup chopped salted peanuts
8 servings
Thinly slice unpared cucumber into bowl.
Pour salad dressing over slices; cover and refrigerate.
Wash spinach and remove stems; dry leaves.
Into salad bowl, tear greens into bite-sized pieces (about 10 cups).
Pour cucumber slices with dressing over spinach.
Add peanuts and toss.