Combine and toss all ingredients directly on a baking sheet. Spread them out into one layer and roast for 40-45 minutes, until the tomatoes are soft. If you're using larger tomatoes they'll take a bit longer to cook. Use the taste test and cook to your liking ;)
Recipe by Healthy Cooking Daily at https://healthycookingdaily.com/2018/08/rosemary-balsamic-roasted-cherry-tomatoes/