Zucchini brownies

Preparation

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  Put the egg whites aside, and add the sugar to the yolks. Whisk well. Add the cornstarch and the salt.
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  Clean the zucchini, and chop it finely. You can also grate it. Add this to the previuous mix.
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  Melt the chocolate and add it to the batter.
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  Whisk the egg whites until they form peaks, and add them gently to the batter.
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  Pour this mix into a square greased mold. Arrange some walnuts on it.
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  Bake 20 minutes at 350°F (180°C).
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  There you are, your zucchini brownies are ready!