Oven-Roasted TomatoesAuthor:Rachael Ray Every DayUpdated:Jul 12, 2017Original:Apr 26, 2016Ingredients4 plum tomatoes, cut into 1/4-inch slices Olive OilPreparationPreheat oven to 350 degrees . Arrange tomatoes in a single layer on a parchment paper-lined baking sheet. Drizzle with olive oil; season. Roast until browned in spots, 30 to 35 minutes.