My recipe is similar to PP but will post anyway. I get RAVE reviews on it every time and can eat it plain with a spoon myself!
1 Can black beans, rinsed
1 can Whole Kernal corn
2-3 plum tomatoes (I use 2 large and that's enough for me, if you like tomotoes add more, use whatever variety you like. I core out the 'guts' and only use the flesh)
1 small red onion, diced
1 jalapeño. diced, seeds removed (I omit for the kids ATM)
1 avocado, diced
1/4 c. olive oil
1/4 c. red wine vinegar
1 TBS. Lime juice
Salt & Pepper to taste.
Stir to coat. Enjoy. It also gets better overnight!