This is a dish I put together for my son, Jordan, who is a huge fan of both tomatoes and mushrooms. The flavors keep blending together, so it is great the day you make it and even better the following day.
Whisk together the balsamic vinegar, vegetable oil, sugar, salt, and pepper in a bowl; add the tomatoes, mushrooms, onions, and basil; toss until evenly coated. Cover and chill in refrigerator at least 3 hours. Stir before serving.
Per Serving: 106 calories; protein 1.4g; carbohydrates 5.3g; fat 9.4g; sodium 153.3mg.