Preheat oven to 320 degrees F (160 degrees C).
Put Ferrero Rocher® Chocolate (8) in a ziploc bag. Crush them until they resemble crumbles.
Mix Water (4 tablespoon) with Brown Sugar (1/3 cup) until sugar dissolves. Add Yogurt (1/3 cup) and Vegetable Oil (1/4 cup), mixing well.
Add the crushed Ferrero Rocher and mix well.
Sift in All-Purpose Flour (1 cup), Baking Soda (1/4 teaspoon), Baking Powder (1/2 teaspoon) and Salt (1 pinch). Mix until well combined.
Pour batter into prepared baking pan. You can also crush some more Ferrero Rocher chocolates on top of the batter. Bake for 20 minutes.
Let the brownies cool completely. Loosen the edges and remove it from the pan. Do not cut until it has had a chance to cool for several hours! Enjoy!