Pili Nut Marzipan

Preheat oven to 180°C. Grease a 1 L loaf pan and line the base and sides with baking paper.
Process pili nuts in a food processor until finely ground.
Place butter and sugar in a saucepan over medium–low heat and cook, stirring, until butter melts. Stir in nuts, then add egg yolks and cook, stirring constantly, for 3 minutes or until thickened. Remove pan from heat and stir in condensed milk.
Pour mixture into prepared loaf pan and bake for 15 minutes or until starting to firm around edges. Cool completely in pan.
Cut pili nut marzipan into 16 pieces and serve.