1. Preheat Oven and Prepare Baking Sheet: Preheat your oven to 400°F (200°C). Line a large, rimmed baking sheet with parchment paper for easy cleanup, if desired. Using a large enough baking sheet is crucial to ensure the vegetables roast rather than steam.
2. Prepare the Vegetables:

   • Green Beans: Wash the green beans thoroughly and pat them dry. Trim off the stem ends. If they are very long, you can cut them in half for easier eating.
   • Tomatoes: Rinse the cherry or grape tomatoes and pat them dry. You can leave them whole. If using larger tomatoes, cut them into 1-inch chunks.
   • Garlic: Peel the garlic cloves. You can thinly slice them, roughly mince them, or even leave them whole if you prefer a very mellow garlic flavor (whole cloves will take longer to soften). If using minced or thinly sliced garlic, be mindful it can burn faster; some prefer to add it partway through roasting.

3. Combine Ingredients: In a large bowl, combine the trimmed green beans, tomatoes, and prepared garlic.
4. Season Generously: Drizzle the vegetables with 2-3 tablespoons of extra virgin olive oil. Sprinkle with salt, freshly ground black pepper, and red pepper flakes (if using). Toss everything together gently but thoroughly with your hands or a large spoon until the vegetables are evenly coated with oil and seasonings.
5. Arrange on Baking Sheet: Spread the seasoned vegetables in a single layer on the prepared baking sheet. It’s important not to overcrowd the pan. If necessary, use two baking sheets. Overcrowding will cause the vegetables to steam instead of roast, and you won’t get those desirable crispy edges and caramelized flavors.
6. Roast: Place the baking sheet in the preheated oven. Roast for 15-25 minutes. The exact time will depend on the thickness of your green beans and the size of your tomatoes, as well as your oven’s specific performance.

   • After about 10-12 minutes, you can give the vegetables a stir or shake the pan to promote even cooking.
   • If you’re worried about minced/sliced garlic burning, you can add it to the pan during the last 10 minutes of roasting.

7. Check for Doneness: The green beans should be tender-crisp and slightly wrinkled, with some charred spots. The tomatoes should be softened, wrinkled, and some may have burst, releasing their juices. The garlic should be fragrant and softened (if sliced/minced) or tender (if whole).
8. Rest and Serve: Once cooked to your liking, remove the baking sheet from the oven. If desired, you can now toss the roasted vegetables with fresh herbs (like basil or parsley), a squeeze of fresh lemon juice, a grating of lemon zest, or a drizzle of balsamic glaze for extra flavor.
9. Serve Warm: Serve immediately as a delicious side dish.

This simple process yields a side dish that is packed with flavor and texture, proving that minimal effort can lead to maximum deliciousness.