Roasted Vegetable Lasagne

I hosted a dinner party during the holidays and a few of my friends are vegetarians, so along with the meat entree I served this delicious and easy roasted vegetable lasagne.Roasting vegetables makes them nutty and sweet and mixed with ricotta cheese and layered between noodles makes them even better. To save time I used a good quality jarred marinara sauce.You can assemble the lasagne the day