Spray a 5-qt oval crock pot (slow cooker) with nonstick cooking spray.
In a large bowl, combine shredded potatoes with the cheddar cheese soup, egg, salt and pepper.
Stir well then spread it in the bottom of the crock pot.
In a large skillet, over medium heat, brown and crumble ground beef along with chopped onion. Drain excess grease and put back into the pan.
Stir in sloppy joe sauce. Spoon sloppy joe mixture over hash brown mixture in crock pot.
Cover and cook on low for about 4 to 4 1/2 hours.
About 10 minutes before the casserole is done cooking, sprinkle the shredded cheddar cheese on top. Cover and alllow cheese to melt before serving.
Notes
Shredded hash browns can be substituted for southern style hash browns, which are the smaller cubed potatoes, or you can use the Potatoes O'Brien that have peppers and onion mixed in with the cubed potatoes.