This is one of my favorite dressings. I found it on Hip2Save.
1 ripe pear, peeled and chopped
1 to 2 cloves garlic, either minced or pressed
Freshly squeezed lemon juice (from 1 lemon)
1/3 cup white vinegar
A few drops of Stevia (optional)
1 tablespoon of mustard
1/2 teaspoon salt
1 teaspoon pepper
1/2 cup olive oil
Blend everything (but olive oil) in a blender. Once blended, drizzle the olive oil slowly into the dressing and continue to blend until combined.