Here’s another recommended recipe we found from Cookpad Spain.
Reference Link:
Baking with Children Easy Low-Calorie Brownies:

100 grams Cake flour

100 grams Margarine (unsalted if you have it)

100 grams Light brown sugar (or white sugar)

2 Eggs

50 grams Cocoa powder

1 few drops Vanilla oil (or vanilla essence)

Line a brownie tray with baking paper.

Melt the margarine in a microwave (this usually takes about 3 minutes).

Add the cocoa into the margarine a little at a time and mix until smooth.

Crack the eggs into a separate bowl and whisk them for 3 minutes.

Gradually mix the sugar into the eggs well.

Add the vanilla oil to the eggs and sugar, then pour the cocoa mixture from Step 3 into the bowl too. Combine well.

Then fold in the cake flour using a rubber spatula.

Pour the brownie mixture into the pan and even out the surface (the mixture should be quite firm). Bake the brownies in an oven preheated to 160°C for 25 minutes.

Once the brownies have cooled, cut them into slices and serve.

I think that these brownies are relatively sweet, but since they’re made with just cocoa they may have quite a mature flavour.

When I take these to children’s parties I usually coat them in white chocolate that’s been melted in a bain-marie.

I also sometimes cover them in chocolate sprinkles.

Unsalted margarine is ideal for this recipe but lately I’ve found myself using a low-calorie spread that’s been on offer at the shop.

For my friends with a sweet tooth, I tend to add 50-70 g non-melt chocolate chips into the mixture as well.