Vegan Bean Salad

• 1 tbspolive oil
• 1small white onion — sliced
• 1jalapeno pepper
• 2ears of corn — shucked
• 3roma tomatoes — chopped, or plum tomatoes
• 15 ozpinto beans — canned, rinsed, drained
• 15 ozkidney beans — rinsed, drained, 1 can
• 15 ozblack beans — rinsed, drained, 1 can
• ¼ cupfresh cilantro
• 2 tbsplime juice
• 2avocados — peeled, diced

For Vinaigrette

• ½ cupolive oil
• ½ cupfresh lime juice
• 1½ tspground cumin
• 1 tspchili powder
• 2 tbspfresh cilantro — finely chopped
• 1 tspsea salt
• ½ tspcracked black pepper