I don’t really have a recipe but here is what I do:
Canned black beans (Goya is the best, IMO)
Cooked white rice (Uncle Ben’s Converted Rice holds up better IMO but you can use brown rice or regular long grain rice as well)
A couple ears of fresh corn, cooked and corn cut off the cob (I find the easiest way is to cook them in the microwave for 5-6 minutes in the husks. Let cool, cut an inch or so off the stem end, husk, and cut the kernels off.
Whatever your favorite salsa is
Lime juice
Chopped cilantro
Avocado
Salt, cumin, cayenne
Rinse the black beans in a colander and shake out the excess water. Combine the black beans, cooked rice, and corn. Add salsa and lime juice to your liking. Salt, and a little cumin and cayenne can be added to taste or just left out depending on if you want more of a kick than just the flavor from the salsa. Chill until ready to serve. I dice the avocado and gently stir that in along with the cilantro before serving.