Preheat the oven to 355 ºF (180 ºC) and line a baking tray with greaseproof/baking paper. (I've used a 20 x 20 cm – about 8 x 8 inch – square baking tray.)
Bake in the pre-heated oven at 355 ºF (180 ºC) for 20 to 25 minutes. (Note 1)
Note 1: The baking time depends on how gooey you want your gluten free brownies to be. 20 minutes gives you super duper gooeyness, while 25 minutes gives kinda-gooey but a bit cake-y brownies. I’ve left them in the oven for 23 minutes and the results are pretty spectacular. (You can also use the toothpick test. Nagi from Recipe Tin Eats has written this wonderful post about how to use the toothpick test when making brownies.)
Recipe by The Loopy Whisk (www.theloopywhisk.com).