Bring a large pot of water to a boil. Remove the husks and silks from the corn and add to boiling water. Cook for 5 minutes and then remove from heat and allow to cool. Add the green beans to the boiling water and cook for 5 minutes. Remove from heat and run cold water over the top to stop the cooking process.
Cut the kernels away from the cobs and add the kernels to a medium mixing bowl. Add the green beans and tomatoes.
In a food processor, add the basil leaves. Turn on the food processor and slowly add oil in the top. Process until smooth. Season with a pinch of salt and a couple turns of a pepper grinder.
Drizzle the basil oil over the corn, tomatoes, and green beans. Toss to coat the salad.
NOTE: You may prefer your green beans cooked a bit longer than 5 minutes.