This is what we had for dinner and it was delcious. I substituted out Italian flavored Pork Sausage for the turkey sausage and yams for the sweet potatoes which were outrageously over priced ($4.97 a pound~!) The Kale was exceptional in this recipe, it reminds me of a soup I've eaten before down south.
Bring your macaroni noodles to a boil - as per directions on the box.
About two minutes before the noodles are fully cooked I added about a cups worth of frozen peas to the noodles. Yes I know this slows the cooking time down but I do it anyway - my bad. NOTE: If you are going to use canned peas add them to the noodles when you add the tuna otherwise they will be way mushy. ALSO if you are using canned peas you will want to drain them and rinse them well before adding to the noodles to reduce the salt content and that oh so special can flavor.
Drain noodles and peas, I use a collander to do this part so I don't burn myself.
Add drained tuna to the noodles and peas.
Add cheese and butter to the noodles, peas and tuna. Mix until butter is melted over low heat try not to scorch/burn you macaroni.
Add milk and stir well over low heat.
Add black pepper to taste and stir well.
All mixed up and cheese thoroughly blended with everything.
Ready to eat! 
Lunch for two adults for less than a $1.50!!!