Place beans on a baking sheet. Drizzle olive oil and sprinkle salt and seasoning. Toss beans to coat evenly.
Bake for 15 minutes, then stir beans around. Bake another 10 minutes.
Notes
Sometimes you can find pre-trimmed, pre-washed green beans in the store, which will cut prep time tremendously. If you can't find them, line up a row of beans so you can trim many ends at once. One by one will take forever.I used The Spice and Tea Exchange's Coastal Blend for the seasoning.