Preparation

• Preheat the oven to 350F then line an 8×8 inch baking pan with parchment paper and set aside.
  
• In a microwave-safe bowl melt the butter, oil, and both sugars, together in 30-second intervals mixing in between every time. Once fully melted microwave for another 1 minute and stir vigorously to allow the sugar to melt fully.
  
• Whisk in the eggs one at a time then add in the vanilla. You want the batter to pull from the bowl a little bit.
  
• Add in the flour, cocoa powder, and salt and fold just until combined.
  
• Pour half of the batter into the parchment paper-lined baking pan and spread evenly.
  
• Place the Oreos in the center of the batter then top with the rest of the brownie batter and spread to cover.
  
• Top with the 5 crushed Oreos and bake in the preheated oven for 30 minutes.
  
• Allow the brownies to cool down fully on a wire rack before slicing into them for the perfect square crinkle top slice every time.