Roasted grape tomatoes are one of those simple recipes that quietly transform everything they touch. These little tomatoes become wonderfully jammy and caramelized after a trip to a hot oven, concentrating their natural sugars into an intensely sweet-savory flavor. I make a batch nearly every week in the summer when vine-ripe tomatoes are abundant, but honestly, they're perfect year-round with organic grape tomatoes or cherry tomatoes from the market.