Potatoe & Onion Ovendish

Ingredients
750 gr potatoes
1 (trappist) beer
3 red onions
butter
3 tablespoons flour
parsley

Preparation
Boil the potatoes, but not until they are completely done
Cut the onions into rings and fry them lightly in a big pan
Remove onions from the pan
Put about two tablespoons of butter in the pan
Wait until the butter turns golden, add flour, stir well and let this fry for a while
Remove from fire and add the beer
Put the pan back on the fire and mix well with a gaurd until you have a light sauce.
Add the potatoes + onion rings to the sauce and let it simmer for a while
Sprinkle with chopped parsley and serve.