Right just made the cook yourself thin ones. Will give the recipe then the verdict:
50ml veg or sunflower oil
150g caster sugar
2 med free range eggs, well beaten
1 tsp vanilla extract
50g cocoa powder
1/2 teaspoon baking powder
80g plain flour
Mix oil and sugar, add eggs and vanilla and stir vigorously.
Add dry ingredients and mix well
Bake in a 20x20cm pan for about 15 mins at 175 degrees centigrade.
So verdict:
I would say these are an every day brownie. The benefits are they are cheap to make, the are 'healthier' than most brownies so you could make them for a regular chocolate treat or whip them up for the kids.
I would say they are not as chocolately as I would like, and powdery rather than moist and chocolatey in texture, sort of stick to the roof of your mouth. The are easy to make though the mixture is very thick and difficult to put in the dish smoothly. Probably needs a little more oil.
Apparently keep for a week in the fridge and freeze well (according to the book).
Like I said, these are your every day brownies, not ones to wow your friends, but to whip up from store cupboard ingredients.