Preheat oven to 350.
Spray casserole dish with Pam cooking spray thoroughly.
Fill a large pot with water and bring to rapid boil.
Mix all grated cheeses except for the Velveeta. Reserve ¼ of cheese for the top.

Add 1 lb. elbow macaroni and cook for 7 Minutes (no more – it will cook in the oven)
Drain well and add the stick of butter to pot to melt.
Add the macaroni to melted butter. (Stir well – make sure all are coated)
Add the half & half, stir well.
Add 2 beaten eggs and stir well.
Mix in the shredded Velveeta.
Stir in ¾ of the grated cheese. (Reserve the rest for the topping.)

Transfer to the prepared casserole dish and top with the remaining ¼ of grated cheeses.
Dot the finished casserole with the 1 tbsp. of butter.
Sprinkle with salt and pepper.

Bake for 35-45 Minutes.
Serve hot!