Cauliflower Salad

1 head iceburg lettuce, torn up
1 head cauliflower, cut up into bite-sized pieces
1 cup mayonnaise
1 medium onion, chopped
1 pound bacon, fried crisp and chopped
1/3 cup parmesan cheese
2 packets sugar substitute

Use a LARGE bowl and layer in the order above. Toss before serving.