Creating Crockpot Lunch Sloppy Joes is easy if you follow these instructions:

1. Brown the Ground Beef: In a skillet over medium heat, brown the ground beef. Drain any excess fat.
2. Prepare Ingredients: In the same skillet, add chopped onions and sauté until they are translucent.
3. Combine Ingredients: In your crockpot, add the browned beef, sautéed onions, ketchup, barbecue sauce, Worcestershire sauce, brown sugar, garlic powder, onion powder, mustard, salt, and pepper. Mix well.
4. Cook: Cover the crockpot and cook on low for 6-8 hours or on high for 3-4 hours. The flavors will meld beautifully during this cooking time.
5. Stir Occasionally: If possible, stir the mixture occasionally to ensure even cooking and flavor distribution.
6. Prepare Buns: About 10 minutes before serving, toast the hamburger buns if desired.
7. Serve: Once cooked, spoon the sloppy joe mixture onto the bottom halves of the buns and top with the other halves.

These steps will lead you to a delicious and heartwarming meal that will become a staple in your lunch repertoire.