In a large, deep skillet over medium-high heat, cook the ground beef until it's no longer pink. Use a slotted spoon to remove the beef and set it aside.
Add the diced onions to the same skillet and cook for 5 minutes until they become translucent. Turn off the heat and return the beef to the skillet.
Stir in the Vegetarian Beans, ketchup, brown sugar, mustard, vinegar, and Worcestershire sauce until the ingredients are well combined.
Lightly coat the slow cooker with spray or use a liner. Pour the mixture into the slow cooker and cook on high for 2 hours or on low for 3-4 hours until hot.
Notes
Use lean ground beef to avoid excess grease, sweet onions for balance, and adjust sweetness with brown sugar.
Check thickness before the last hour of cooking and adjust with water or beef broth as needed.