Briam (Greek Baked Zucchini and Potatoes)
You can "puree" the tomato by cutting them in half and grating them on a large box grater, leaving the skin behind.
This might seem like a lot of time in the oven, but trust me. The bulk of the flavor is derived from this, and you definitely want some nice crusty and charred edges on your vegetables for maximum flavor.
Don't be afraid of salt and pepper with this dish. Be liberal for best results. Start out as you normally would, and you can always add more seasoning when you check after the 1-hour mark!
If vegetables are too dry in step 3, add a few tablespoons hot water. There should be no water left in the end, however.