Melt the butter with the oil in a saucepan. Add the
onion and apple, cover and cook gently, stirring
occasionally, for 2 minutes until softened but not
browned.
Add the stock, bring to the boil, reduce
the heat and simmer for 10 minutes.
Cool slightly
then place in a blender or food processor with the
Stilton and run the machine until smooth.
Return to
the saucepan and stir in the Madeira and cream.
Season to taste, add the rice and heat through but
do not boil. Garnish with the chives before
serving.