This easy frittata slow cooker recipe uses vegetables, eggs, cheese and a few seasonings. It's simple yet flavorful and best, it's ready in just an hour or so Thank you Rose, Theslowcookinghousewife; her Slow Cooker Veggie Frittata recipe inspired this one.  I've made breakfast casseroles plenty of times in my slow cooker but this was my first time making a frittata. Um...where have