Take...

6 tablespoonfuls (75ml) butter
2 cups hot water
4 cups breadcrumbs
1 onion, finely chopped
1 tablespoonful (15ml) sage, chopped
1 tablespoonful (15ml) parsley, chopped
1 tablespoonful (15ml) fennel, chopped

then...

1 Melt the butter in the hot water

2 Mix in the other ingredients

Should be enough for a 2kg chicken.