Smoked Veggie Grain Bowl

Name: Smoked Veggie Grain Bowl
Ingredients: 3 Tbs. extra-virgin olive oil; 1/2 red onion; 2 ears of corn, shucked; 1 red bell pepper; 1 serrano chile (optional); 1 large ripe but firm avocado, halved and pitted; 1/2 English cucumber, diced; 1 pint (12 oz./375 g) cherry tomatoes, halved or quartered; 2 cups (10 oz./315 g) cooked brown rice; 1 Tbs. white wine vinegar or fresh lemon juice; Sea salt and freshly ground pepper; Hot sauce, such as Tabasco, to taste (optional); 1/2 cup (3/4 oz./20 g) chopped fresh cilantro