Lasagna with Swiss Chard, Sausage, and Lemon

Sunday night dinner this past weekend.  Compliments of Martha again.  She has been having lots of really tasty recipes lately.  During the summers they correspond nicely with the garden and what is coming from it. 

yes that is a lemon slice on top, not a tomato.  You boil the lemon slices first and that removes any bitterness with the pith.  It's a great compliment to the swiss chard and cuts the richness of of the sausage.