Servings: 1 About a cup.

1/2 cup mayonnaise ½ cup mayonnaise
1/3 cup white vinegar ⅓ cup white vinegar
1 teaspoon vegetable oil 1 teaspoon vegetable oil
2 tablespoons light corn syrup 2 tablespoons light corn syrup
2 tablespoons grated Parmesan cheese 2 tablespoons grated Parmesan cheese
2 tablespoons grated Romano cheese 2 tablespoons grated Romano cheese
1/4 teaspoon garlic salt, or 1 garlic clove, minced ¼ teaspoon garlic salt, or 1 garlic clove, minced
1/2 teaspoon dried Italian seasoning ½ teaspoon dried Italian seasoning
1/2 teaspoon dried parsley flakes ½ teaspoon dried parsley flakes
1 tablespoon lemon juice 1 tablespoon lemon juice
Sugar (optional) Sugar (optional)

Combine all the ingredients in a blender until well mixed.
If this is a little too tart for your own personal taste, add a little extra sugar.

You can enjoy your Olive Garden salad dressing for up to 10 days if you store it in an airtight container in the refrigerator.  You can enjoy your Olive Garden salad dressing for up to 10 days if you store it in an airtight container in the refrigerator.
Another great use for the Olive Garden salad dressing is as a marinade for vegetables or even meats that you might like to grill.  Another great use for the Olive Garden salad dressing is as a marinade for vegetables or even meats that you might like to grill.
To make your own Italian seasoning mix together:  To make your own Italian seasoning mix together:
1 1/2 teaspoon dried oregano  1 ½ teaspoon dried oregano
1 teaspoon dried marjoram  1 teaspoon dried marjoram
1 teaspoon dried thyme  1 teaspoon dried thyme
1/2 teaspoon dried basil  ½ teaspoon dried basil
1/2 teaspoon dried rosemary  ½ teaspoon dried rosemary
1/2 teaspoon dried sage  ½ teaspoon dried sage