Cooking Review - Slow cooker

I broke in the slow cooker today. I made sloppy joes. I did not follow the recipe too well. I put in have the peppers and onions that was called for. It turned out good.

This is how I made it:

Brown 2 pounds ground beef with 2 medium onions cut into slivers. Then I put that in the slow cooker with 2 medium red peppers sliced up, 1 medium green pepper sliced, 1 cup ketchup, 1/4 cup vinegar, 1/4 teaspoon cayenne pepper, 1 tablespoon chili powder, 1/2 teaspoon salt, and 1/2 teaspoon black pepper. Mixed it all up and cooked on low for 8 hours.