Preheat oven to 425 degrees.
Place the green beans on a baking sheet (line with foil for easy clean up.) Drizzle 1-2 tablespoons of olive oil over the vegetables. Sprinkle with garlic, salt, and pepper. Toss to coat.
Bake for about 15 minutes, or until tender. Sometimes I will also preheat the broiler and cook them that way. Same amount of time.
Place beans in serving bowl and sprinkle sesame seeds over them, toss to coat.