Jan,

I think that this is the one you're looking for:

INGREDIENTS:

1/2 cup Mayonnaise
1/3 cup White Vinegar
1 tsp. Vegetable Oil
2 Tbsp. Corn Syrup
2 Tbsp. Parmesan Cheese
2 Tbsp. Romano Cheese
1/4 tsp. Garlic Salt - or one clove garlic minced
1/2 tsp. Italian Seasoning
1/2 tsp. Parsley Flakes
1 Tbsp. Lemon Juice
Olive Garden Salad Mix

Mix all ingredients in a blender until well mixed. If this is a little to tart for your own personal tastes please add a little extra sugar.