Olive Garden Salad Dressing

This was on my Facebook today.  I haven't tried it yet, and I'm not sure how I feel about the vegetable oil in there, but anyway, it's worth reposting.

Olive Garden Salad Dressing
Ingredients:
1/2 C mayo
1/3 C white vinegar
1 t vegetable oil
2 T grated Parmesan cheese
2 T grated Romano cheese
1/4 t garlic salt
1/2 t dried Italian seasoning
1/2 t dried parsley flakes
1 T lemon juice
Sugar to taste (optional)

Instructions: Mix all ingredients in a blender until well mixed.  If this is too tart for you, add sugar a little at a time.  Store for up to 10 days in an airtight container in the refrigerator.

Notes
This can also be used for a marinade for vegetables or meats for grilling.