1 (10 ounce) package frozen chopped spinach, thawed
1 (4 ounce) can sliced mushrooms, drained
1 (8 ounce) container sour cream
1 (16 ounce) bottle Italian-style salad dressing
In a medium bowl, mix the spinach, mushrooms, sour cream, Italian dressing and remaining Italian dressing. Chill in the refrigerator at least 1 hour before serving.