Preheat oven to 400 convection. Clean and trim 1/4 # green beans per serving 8 oz since we are “cooking for two”. Try to use ones of constant size. The skinny ones with dry out.
In a medium bowl combine beans with 2 t olive oil. Mix well then add 1/4 t kosher salt and 1/8 t pepper and mix again.
Cover a baking sheet with parchment paper. Spread the beans evenly across the paper. Cover with 1/4 cup Parmesan cheese (fresh preferred).
Bake until browning some, 10-15 minutes.
Source : allrecipes.com