Nanna's baked Macaroni and cheese

1 lb macaroni cook as per box 2-3 cups milk more if needed
2-3 cups of cheese 1 tsp salt
Sharp white Cheddar, Parmesan 1 tsp pepper
another hard cheese 1/2 cup read crumbs
1 cup butter 4 eggs, slightly beaten
1/4 cup butter (for topping) 1 cup sour cream

Mix drained macaroni with 1 stick of butter, add cheeses mix together.
Add eggs, salt and pepper mix with sour cream. add to macaroni. Add milk till macaroni is covered
about 1/2 inch.
Bake 350* for 30- 35 minutes.