Preheat the oven to 350° F. Place the sauerkraut, onion and corned beef in a blender or a food processor that has been fitted with its cutting blade. Process until finely chopped. Combine the mixture with the remaining ingredients in a 1-quart casserole dish that has been coated with nonstick vegetable spray. Bake for 30 to 40 minutes, until heated through.
authentic Reuben sandwich flavor, try serving it with crispy rye bagel chips or party (cocktail sized) rye bread.
