• Preheat your oven to 350 degrees. Spray a 9 by 13 inch baking dish with cooking spray. Set aside.
• In a large bowl, mix together the flour, cocoa powder, and salt. Set aside.
• In a medium microwave safe bowl combine the butter and chocolate chips. Microwave at 30 second intervals, stirring in between, until the butter and chocolate are fully melted and smooth.
• Whisk the sugar into the butter and chocolate mixture. The mixture will be a little grainy, but should be consistent throughout.
• Pour the chocolate mixture into the flour mixture. Stir to combine. The batter will be very thick. Stir in the eggs, vanilla, and finally the baileys..
• Spread the batter into the prepared pan. Bake for 30.

For the Frosting

• Once the brownies have cooled, make the frosting. Combine the sugar, butter, and baileys in a heavy bottomed saucepan, stirring until the butter is fully melted and the sugar is incorporated.
• Bring to a boil and let boil for 1 minute. Remove from the heat and stir in the chocolate chips. Continue stirring until it is smooth. Pour immediately over the brownies.
• Cut the brownies and enjoy. Store in an airtight container for up to 1 week.