Spray a 6 quart slow cooker with non-stick cooking spray or line it.

Slice the top off the peppers and clean out, keep the top.

In a medium sized bowl, add in the beef, seasoning, rice, onion, and black beans.

Mix well and then stuff each pepper.

Add the peppers to the slow cooker and then put the top of the pepper back on.

Add about 1/4 cup water, just to cover the bottom of the cooker.

Cover and cook on low for 8 hours.

Carefully remove and add cheese, if warm it should melt quickly.

Serve.