A mother sauce with lots of added cheddar, topped with seasoned breadcrumbs and more cheddar.
My mom always used cheese whiz and the above topping.
Ive used canned cheese soup with added preshredded cheeses, cheddar/jack combos or the mexi combo works well.
elbows, shells or twists just about any pasta will work.
for real decadence egg noodles and blucheese!I just cook the noodles, drain and add a package or 2 of crumbled blucheese then stir