This is an old Scottish Slimmers recipe:
MICROWAVE MEAT LOAF - Serves 4
small onion, chopped
75g carrot, coarsely grated
400g lean minced beef/minced steak
1 dspn Worcester sauce
1 dspn tomato puree
1 dspn dried parsley
2 Bovril cubes
1 egg, beaten
In a 1 litre (microwavable)casserole or 1kg microwavable loaf pan microwave carrots and onions, covered, on high, 4 minutes or until soft. Mix in mince, Worcester sauce, tomato puree and parsley. Crumble in Bovril cubes, add beaten egg and mix thoroughly. Press down mixture and cover. Microwave on medium (500 watts) 12 minutes. Stand 5 minutes then drain off surplus fat.
(Serve with jacket or mash potatoes,veg and gravy.)
I did make proper meatloaf when I lived in America but can't remember how to do it! I know the recipe I did used apple sauce, wish I still had it.