Preheat your oven to 350°F (175°C) and line a 8 in x 11 in (21cm x 28cm) with baking paper (you can also use a 10 inch round pan - 26cm in diameter)
Let brownies cool for 10 minutes and transfer to a rack to cool completely and cut in square pieces. Eat!
For extra chocolaty brownies replace 1/4 cup of the flour with the same amount of cocoa powder (you’ll have 1/2 cup cocoa powder in total).
If you find the taste of olive oil overpowering or you have an olive oil with a strong taste, you can use half olive oil and half another vegetable oil.