This isn't the only recipe for these types of things, but it is what we use in our hives:
12# of Sugar
1 pint of Corn Syrup
Bowl or Bucket to mix the ingredients
Bread Loaf Pan or something you can put the sugar in and put in the oven
Put the Sugar and Corn Syrup into the Bowl or Bucket and mix together until all the Sugar and Corn Syrup is combined
Put the sugar it into the pan about an inch at a time and compact it as tight as you can. Put in the over at 240 degrees for 2 1/2 hours. Let cool. DO NOT TAKE OUT HOT!!! Brick will crumble and you will get burned pretty bad. Turn pan upside down and tap, there you have a 3# -4# sugar brick.