Toss
the meat in the seasoned flour. Heat the oil in
a flameproof casserole, add the onion and fry
gently for 5 minutes.
Add the meat and cook
until browned. Stir in the carrots, then add the
beer and stock. Stir in 2 teaspoons of the
mustard and season to taste with salt and
pepper.
Bring to the boil, cover and cook in a
preheated oven, 180°C (350°F),
Gas Mark 4, for 1
1/2 hours.
Meanwhile, blend the
remaining mustard with the softened butter or
margarine in a small bowl. Spread the mustard
mixture over the slices of bread.
Remove the
casserole from the oven and place the bread on
top, mustard side up.
Return to the oven and
cook, uncovered, for 20 minutes. Garnish with
the parsley and serve.