First and one of the most important things is to drain the sauerkraut extremely well. Too much excess water leftover can really change the texture of the dip.
Next, slice up the corned beef and grate the cheese.
In the crockpot, add all of the ingredients then turn the crockpot on high for 3 hours. Comeback every hour to give it a stir to keep the cheese from burning on the sides.
After 3 hours the dip will be melted and ready. Give it one last good stir then begin serving.