3 baked macaroni and cheese for two Recipes

butter plus more for baking dish, sliced large shallots (about 6), elbow macaroni (2 cups), half and half, hot sauce (such as cholula), coarsely grated extrasharp cheddar cheese (about 8 oz), all purpose flour, crumbled soft fresh goat cheese

elbow macaroni , cooked - al dente, drained well, overflowing cups of sharp cheddar cheese, shredded or cut into 1/4-in cubes, evaporated milk, sugar, egg, beaten, season salt - to taste, fresh cracked black pepper - to taste, two or three or four of cayenne pepper