Preheat oven to 350 degrees (F). Spray an 8×8 pan with non-stick spray and then lay thick strips of parchment paper across the bottom of the pan in a cross shape. This will make it easier to lift the brownies out of the pan once cooled.
In a medium bowl combine the melted butter and brown sugar. When fully combined add the eggs and vanilla. Beat until fully combined and light in color.
In a small bowl combine the flour, cocoa powder, and salt. Whisk to combine and remove any lumps.
Add the dry ingredients to the wet ingredients and mix until just combined. Overmixing will create tough brownies.
Fold the chocolate and ferrero Rocher chocolates into the mixture and pour into the prepared baking dish.
Bake the brownies for 17-20 minutes, longer if you would like a firmer brownie.
emove from oven and allow to cool.
Notes
Add chunks of chocolate and roughly crushed ferrero rocher on top before baking. This will give you those incredible puddles of chocolate on top of the fudgy brownies.
Don't overmix. You need to mix your batter until all of the ingredients are JUST combined, otherwise, you will make too much gluten and your brownies will be cakey instead of fudgy.
The provided nutrition information is an estimate. The calorie accuracy is not guaranteed.