Spread each slice of bread with 2 teaspoon Reuben Dressing. Sprinkle 1 teaspoon blue cheese on top of dressing. Add onion slice, hot garden burger, 1/3 cup sauerkraut and 1 slice Swiss cheese. Broil 6 to 8 inches from heat until cheese melts and turns golden brown.

Dressing: Combine yogurt, nonfat mayonnaise, Dijon mustard and a dollop of yellow mustard; mix well and refrigerate.

Per serving: (burger): About 255 cal, 12 g pro, 43 car, 5 g fat, 17% cal from fat, 7 mg chol, 395 mg sod, 1 g fib. (Dressing): About 10 cal, 0 g pro, 2 g carb, 0 g fat, 9% cal from fat, 0 mg chool, 88 mg sod, 0 g fiber.