Now that I've made this easy gluten-free tomato soup in the slow cooker, I will never eat canned tomato soup again! I don't think my mother ever made soup from scratch in her life. If she did, it was so rare that I don't remember it. I grew up on canned soup. It's convenience food and since my mother worked full time, she was big on convenience foods. When I first moved out on my own at 19, I practically lived on grilled cheese and tomato soup. I honestly didn't know what I was missing until I started making my own...