Kid-Pleasing Sloppy Joes

Ingredients (7)

• + 1 pound ground beef add to pantry
• + 1 small onion, chopped add to pantry
• + 1 cup ketchup add to pantry
• ✓ 2 tablespoons cider vinegar
• + 2 tablespoons brown sugar add to pantry
• + 1 tablespoon Worcestershire sauce add to pantry
• + 1 teaspoon mustard add to pantry