Boil macaroni in water until al dente. Reserve ΒΌ c. cheddar cheese.
Beat the 3 eggs.
In a large bowl, mix evaporated milk, remaining cheddar cheese, Monterey Jack cheese, Velveeta, eggs, salt & pepper. Add the cooked macaroni & mix until well blended. Pour mixture into appropriate sized Crockpot or other slow cooker. Top the mixture with your reserved cheddar cheese.
Cook at Low setting for 3-4 hours.
Recipe by Food Askew at http://foodaskew.net/2011/08/crockpot-mac-n-cheese/