Delicious oven roasted green beans

2 lb green beans, trimmed, washed and allowed to dry
1/2 small onion, sliced in big chunks
2 T EVOO
1/2 t iodized salt
1/2 t freshly ground black pepper
zest of 1 lemon

Directions

1. Preheat the oven to 425 degrees F. Put foil in the bottom of a baking sheet. 
2. Place green beans and onion on baking sheet. 
3. Mix remaining ingredients in small bowl. 
4. Toss beans and onion with oil mixture.
5. Roast, stirring once halfway through, until lightly caramelized and crisp tender, 12 to 15 minutes.