'Mickey mouse' circuit - that's the term that was used for such circuits. And one of the first MM-circuit was the Autodromo de la Ciudad de Mexico "Magdalena Mixhuca" built in 1962, now the Autodromo Hermanos Rodriguez.
Yeah not sure how you regard Mexico City as a Mickey Mouse circuit, considering it's got a massively long straight, series of fast challenging esses and a final corner than makes the Parabolica look tame. Sure it isn't Spa, but it's in a totally different league to Jarama.