2 (10-ounce) packages frozen okra, thawed
2 medium tomatoes, chopped
1/3 cup diced celery
2 teaspoons prepared horseradish
1/3 cup red wine vinaigrette
2 (10-ounce) packages salad greens
1/2 to 1 cup chopped walnuts, toasted
Cook okra according to package directions; drain and cool.
Combine okra and next 4 ingredients in a large bowl; cover and chill at least 4 hours.
Toss together okra and salad greens; sprinkle with walnuts. Serve immediately.