Bring large pot of lightly salted water to a boil. Put corn cobs in water and cook about 5 minutes. Remove and set aside.
Place grape tomatoes and garlic in mixing bowl. Add olive oil, salt & pepper to taste. Mix well. Place on grill(I use a rack on my grill for small veggies).
Brush corn with olive oil and sprinkle with garlic powder, salt & pepper to taste. Put on grill with tomatoes.
Cook about 15 minutes rotating the corn and tomatoes(the tomatoes usually get done before the corn).
Meanwhile rinse black beans and put in pan on stove with cumin and salt & pepper. Cook on medium low until grilled veggies are ready.
Remove veggies from grill and set aside. Once corn is cool with a knife remove kernels from cobb and add to tomatoes.
Rinse avocado and cut in half. Remove pit and cut in slices. Put juice of lime over avocado and salt to taste.
Place lettuce leaves on plate, then top with black beans, grilled veggies, red onion, cilantro, avocado and optional cheese.
Can dress with olive oil and vinegar.
Notes
*can use fresh corn on the cobb. Just break 3 ears of corn in half(it's just easier to remove kernels on halves).