Black Bean Salsa

From "Favorites" Cookbook

1 (15-oz) can black beans, drained and rinsed
8 ounces frozen corn
1/4 cup fresh cilantro
1 tbsp chopped green onions
2 tbsp chopped red onions
1/4 cup fresh lime juice
2 tbsp vegetable oil
1 1/2 tsp ground cumin
salt and freshly ground pepper
1/4 cup chopped ripe tomatoes, drained  (Stir in just before serving.)

In large bowl, combine beans, corn, cilantro, green onions, red onions, lime juice, oil and cumin.  Season with salt and pepper to taste.  Cover and chill at least 2 hours or overnight.  Just before serving, stir in tomatoes.