Roasting vegetables brings out their natural sweetness and adds a delicious depth of flavor to this lasagna recipe. A medley of roasted vegetables, such as zucchini, bell peppers, and eggplant, are layered with lasagna noodles, marinara sauce, and cheese. The combination of the caramelized vegetables and the cheesy goodness makes this lasagna a true winner. Serve it with a side of garlic roasted potatoes for a comforting and satisfying meal.