I love sloppy joes and they are so easy to make homemade! All you need to do is brown ground beef in a pan. When it is cooked drain it and return it to the pan. Add 1 cup Ketchup, 2 tablespoons yellow mustard, 1/4 cup apple cider vinegar, 1/4 cup of Worcestershire sauce, and salt and pepper to taste. Cook for about 5 to 10 minutes or until warmed through.