Oreo brownies

hey guys soo today i was going to share my goodbyes to my best friend whose traveling, so I noticed she just happens to love oreo and so you can use it in almost any way so I thought i still haven't try an epic recipe: oreo brownies with cream cheese frosting what a delightful dessert:D
For the oreo stuffed brownies:
300 g unsalted butter
2 1/4 cups sugar
4  eggs
1 1/4 cups cocoa powder
1 teaspoon salt
1 teaspoon baking powder
1 tablespoon vanilla extract
1 1/2 cups flours
15 0reos (you can use as much as you want)

For the cream cheese oreo frosting:
300 g icing sugar
50 g butter at room temperature 
125 g cream cheese ( better to use philadelphia cheese:D)
4 or 5 crushed oreos ( there's nothing better)

Garnish the brownies with some oreos and icing sugar to give it a better colour and taste, ENJOY:)))