Preheat your oven to 425°F (220°C).
Wash and trim the green beans, removing the ends.
In a large bowl, combine olive oil, minced garlic, salt, pepper, and red pepper flakes.
Add the green beans to the bowl and toss to coat evenly.
Spread the green beans in a single layer on a baking sheet.
Roast in the preheated oven for 20-25 minutes until tender and slightly crispy.
Stir the beans halfway through cooking for even roasting.
Remove from the oven and drizzle with lemon juice.
Garnish with fresh herbs before serving.