"As they say, opposites attract. That’s certainly the case with sweet, acidic tomatoes and creamy dairy—in all its many forms. After all, it’s this better-together combination that makes lasagna so luxurious, pizza so mouthwatering and grilled cheese and tomato soup so irresistible. So when we set out to make an extra-easy slow-cooker soup, we knew we wanted it to feature this combo. But hold on—dairy in the slow cooker? That’s usually a less-than-ideal combination (dairy can easily curdle in the slow cook..."