This is a wonderful salad I found on Allrecipes a couple of years ago. I've made it many times and adapted it a little bit, but not much. The ingredients are as listed in the recipe, and my notes are in red.
1/3 cup fresh lime juice
1/2 cup olive oil (that's way too much...1/4 c is plenty)
1 clove garlic, minced
1 teaspoon salt (optional)
1/8 teaspoon ground cayenne pepper (I leave this out and sub 1/2 tsp cumin instead, IMO, this salad screams for cumin)
2 (15 ounce) cans black beans, rinsed and drained
1 1/2 cups frozen corn kernels
1 avocado - peeled, pitted and diced (or two!)
1 red bell pepper, chopped
2 tomatoes, chopped
6 green onions, thinly sliced (I use chopped red onion)
1/2 cup chopped fresh cilantro (that might be too much for some, but I love cilantro)
Place lime juice, olive oil, garlic, salt, and cayenne (or use the subbed cumin)
in a small jar. Cover with lid, and shake until ingredients are well mixed.
In a salad bowl, combine beans, corn, avocado*, bell pepper, tomatoes, onions, and cilantro. Shake lime dressing, and pour it over the salad. Stir salad to coat vegetables and beans with dressing, and serve.
It's better if it sits for a bit before serving, but not necessary.
*Mix avocados in last, and gently stir in so they don't get all broken up. They'll stay nice and green with the lime juice dressing.
Black Bean and Corn Salad II Recipe - Allrecipes.com