Preheat oven to 350°. Add drained green beans to an 8X8 casserole dish and set aside.
In a skillet over medium heat, cook bacon until crisp, then add diced onions and cook until onions are translucet. Drain
Add ketchup, brown sugar, and Worcestershire sauce to bacon and onions and simmer for 2 - 3minutes. Pour sauce over green beans, but do not stir. Bake for 20 minutes. Enjoy!