Allow back strap or tenderloin to thaw if needed
Drizzle the inside of slow cooker lightly with olive oil
Place meat in slow cooker and season with garlic salt, black better, and Worcestershire sauce
Pour carrots and onions on top
Prepare pork gravy separately on the stove according to package instructions
Pour gravy top top of meat in slow cooker, followed by cream of mushroom soup
Slow cook for 6 hours
Slice or shred meat when finished and enjoy!