Cook the green beans in a microwave-safe bowl for 6 minutes in the microwave on high
Heat the oil in a large skillet over medium heat
Add the garlic, onion powder, Italian seasoning, and pepper
Sauté the mixture, stirring frequently, for 2 minutes
Add the green beans to the skillet
Stir to coat the beans with the oil mixture
Sauté for 2 more minutes
Remove from heat
Add the tomatoes to the beans
Sprinkle with Parmesan cheese
Serve