small yellow onion, thinly sliced
heirloom tomatoes, sliced 1/4 inch thick
unsalted butter, melted
habanero jack cheese, shredded
This rustic vegetarian Heirloom Tomato Gratin is a simple dish with tomatoes, olive oil and habanero jack cheese baked to a gooey perfection. Serve it with crusty bread and wine to keep you warm on cold nights.