Avocado, Tomato & Corn Salad

corn (cut from 2-3 ears or frozen/thawed) 2 tsp. grapeseed oil (you can use canola, etc.) 2 avocados, peeled and diced 1 pint cherry tomatoes, halved 1/2 cup diced red onion 1 lime, juiced 1/2 tsp. salt 1/4 tsp. pepper