1 qt. mayonnaise
1 tsp. garlic powder
1 med. onion, finely chopped
1 pt. sour cream
1 tbsp. lemon juice
6 oz. wedge bleu cheese, crumbled

Mix mayonnaise, onion, garlic powder, lemon juice, and bleu cheese in blender or food processor for 1 minute. Add sour cream and blend with spoon. You may want to mix in the bleu cheese at the end when using a processor, if you desire, larger pieces if your dressing.