Roasted Corn without pork avocado

2 tablespoons plus 1/3 cup olive oil 1 onion, chopped 2 cups corn kernels (from about 4 ears of corn) 1/4 cup chopped cilantro 2 15 1/2-oz. cans black beans,[...]

1 tablespoon vegetable oil 2 garlic cloves, minced 3 cups fresh corn kernels (about 6 ears) 2 cups diced peeled ripe mango (about 2 pounds) 1 cup chopped red[...]