Clean spinach and tear into bite-sized pieces. Place in salad bowl. Add sliced red onions, mandarin oranges and mushrooms.
Toss. Place coconut and pecans on top. Pour dressing just before serving. Toss and serve.
To mix dressing, place all ingredients except poppy seeds in blender and mix well. Add poppy seeds.
Can be stored in a glass bottle in refrigerator until ready to use. Shake well before adding to salad.
Cajun Country -- New Iberia, Louisiana