Sloppy Joe's Recipe | Say Mmm

Ingredients

• 2 pounds ground beef
• 1 large onion, chopped
• 1-1/4 cups ketchup
• 1/2 cup water
• 1 tablespoon brown sugar
• 1 tablespoon white vinegar
• 1/2 teaspoon salt
• 1/2 teaspoon ground mustard
• 1/2 teaspoon chili powder
• 1/4 teaspoon ground allspice
• 8 sandwich buns, split