Peel, remove core and dice the apples and pear into small pieces. Add the lemon juice and water (or apple juice) Simmer on low in a small saucepan until soft, about 20 minutes.
Mash or purée the fruit. Whisk in the egg yolk and sugar until smooth. Bake at 350° F for 15 minutes or until set. Cool before serving.
Makes: 8