Preheat oven to 350°F.

In a large bowl, whisk together the olive oil, white balsamic vinegar, and minced garlic.

Add the beans to the bowl and toss to coat the beans liberally on all sides.

Cover a large baking sheet with aluminum foil. Arrange green beans in a single layer on the sheet.

Cut the lemons in half and place cut side down in the four corners of the baking sheet to roast with the beans.

Roast for 15 minutes, or until green beans become lightly brown and crisp on the outside.

Remove from the oven and place in your serving vessel.

Squeeze the roasted lemon halves over the dish (be careful to catch any seeds) and serve immediately.