Preheat oven to 375 Degrees Fahrenheit.

Make life easier... line the cookie sheet with a piece of baking parchment, cleanup becomes trivially easy at that point. A half-size cookie sheet is just big enough for 1 lb of green beans, but a full size one will make for even crispier results!

Wash and trim the ends of the green beans. Dry the green beans with a clean dish towel then add them to a large bowl. Drizzle with olive oil and sprinkle on the salt and pepper (don't hold back) then toss everything together to coat the green beans with the oil and seasonings.

Place the green beans on the parchment lined cookie sheet and bake in the preheated oven for a total of 20-25 minutes, flipping the green beans halfway through (I use tongs for this) to make sure they cook evenly.