• Preheat oven to 350 degrees.
• Prepare an 8x8 pan, covering pan with aluminum foil, then lightly grease foil.
• Melt butter in saucepan on lowest setting until melted.
• Add chocolate chips to melted butter, whisking until melted. Turn off heat and let sit.
• In a large mixing bowl, use a large whisk, lightly beat the eggs.
• Add the sugar and salt to the eggs and whisk until just incorporated.
• Whisk the melted chocolate, then add into egg mixture and whisk until combined. Whisk in vanilla.
• Sift flour and cocoa powder over brownie batter and stir in with silicone spatula or whisk until just combined.
• Pour batter into pan, spreading out with spatula.
• Press chopped Oreos into batter.
• Bake for 25 - 35 minutes depending on size pan. Check center doneness by inserting a toothpick until it comes out clean.
• Transfer pan to cooling and rack and let cool. Place in fridge to speed up process, 15 minutes after taking out of oven. (Brownies and cakes are easiest to frost when refrigerated and are cold.)

Oreo Vanilla Frosting

• In a small mixing bowl, cream butter, shortening together, then add in marshmallow cream, confectioners sugar, vanilla and salt and beat together on low increasing speed until smooth.
• Dollop frosting over brownies and spread out using a small spatula.
• Place chopped Oreos on top of frosting.

Chocolate Ganache

• Using microwave, melt chocolate and butter together in 30 second increments until melted. Spoon chocolate into a plastic bag, snip a small hole in corner of bag and squeeze ganache all over the cookies and frosting or just use a spoon and drizzle.
• Let brownies set and cut into squares and serve. Leftovers should be sealed.