More like a relish than a true jam, this sweet and tangy tomato peach jam is delicious on burgers in place of ketchup or served alongside grilled meats, sausage, or fish. It also pairs well with fresh, mild cheeses such as burrata or mozzarella.
To begin, place the tomatoes, peaches, and shallots on the prepared baking sheet. Add the salt and the olive oil and mix with a rubber spatula until evenly coated.
Bake for 25 to 30 minutes, stirring once after 20 minutes to prevent burning and sticking around the edges, until the tomatoes and peaches are soft and starting to brown.