Salisbury steak in the crock pot. I'm actually making it right now and it smells amazing. And it was really easy to prepare.
Here's the link, I found it on pinterest!
http://allrecipes.com/Recipe/Slow-Cooker-Salisbury-Steak/Detail.aspx?ms=1&prop25=80079589&prop26=SlowCooker&prop27=2012-03-23&prop28=Main&prop29=Recipe&me=1