Brownies are not an Aussie thing (we grow up so tough because we are fed on vegemite LOL), but as I believe chocolate is the sixth food
group and I have someone on board who is very happy to be a test subject for any anything containing choc, I have experimented with making brownies since I started cruising and have come up with a rich fudgy vegan boat version that I can still make when we have run out of eggs.
If you have no bananas or if you are superstitious, then use stewed apples or even pureed tinned peaches instead
1/2 cup cocoa powder (85% if you can find it, otherwise at least 70%)
Shot of espresso (or a teaspoon of instant coffee) and enough boiling water
to make about 1/3 cup coffee
1/2 cup mashed banana (seems to substitute reasonably for egg)
1/4 cup oil (I use EV olive oil for everything on board)
3/4 cup sugar
1 tsp vanilla extract
1/2 cup walnuts, chopped
1 cup cake flour
1 tsp baking powder
1/2 tsp baking soda
Mix cocoa and coffee to make a thick sauce like consistency.
Whisk in the the mashed banana, then the oil, sugar and vanilla.
Stir in the nuts.
Sift together the flour and baking powder and soda (it needs to be well mixed and lump free, so don't skip this step).
Gently fold the flour into the liquid mix (it will be thicker than cake consistency).
Tip in an oiled silicone cake pan and pat down.
Sprinkle with an extra tablespoon of sugar to give crunch to the top.
Bake at 175 C for about 15-20 min (centre should be a little underdone when tested, the key is not to overcook it).
Cool in pan 10-20 minutes.
Best eaten still warm. It is hard to resist it anyway, I usually have a spoonful or two from the edge while it is cooling