Prepare the green beans by washing them thoroughly and cutting off the stem end or slicing off with a sharp knife.
In a large skillet, bring the water to a boil and add in the green beans. Cover and allow to simmer for 5-6 minutes. You don't want to fully cook the green beans.
Drain the green beans and the water. In the skillet melt the butter and olive oil. Saute the garlic until it is fragrant, about 2 minutes.
Add the green beans back into the pan with the garlic and continue to cook for another 5-6 minutes until the green beans are soft and cooked through.
Turn off the heat and sprinkle with the grated parmesan. Remove to a serving dish and enjoy!!