French Vegetable Lasagna with Herb Salad

Method

1. Preheat oven to 180°C (350°F).
2. Sauté carrots, bell peppers, and spinach in olive oil until softened.
3. Combine tomato sauce with thyme and seasonings.
4. Layer lasagna sheets, vegetable mix, tomato sauce, and béchamel in a dish.
5. Top with Gruyère cheese and bake for 25-30 minutes.
6. In a bowl, mix salad greens with olive oil, vinegar, and mustard.
7. Serve the lasagna with the herb salad on the side.