I followed the recipe off the back of the Creamette macaroni box. Note: the proportions are for half of the box of noodles!

3 tbsp butter
3 tbsp flour
2 1/2 cups milk
1/2 tsp salt
1/8 tsp pepper
2 cups shredded Cheddar cheese (I just used a whole block which was probably closer to 3 cups)

The smashing success of the first recipe drove me to try and reproduce it about a week after the first cake. Although it was a while ago I think the two things I did differently were using tinfoil and redoing the coals. I think I was at 4 on the bottom and 18-19 at the top but there may have been 5 on the bottom. The tinfoil was used to help with the cake flip which came out perfectly this time.