Butterscotch Cheesecake Brownies

Preheat the oven to 350 ºF. Line an 8x8-inch baking pan with parchment paper and grease it with cooking spray or butter. In a large bowl, combine the melted butter with the sugar, cocoa powder, vanilla extract and salt, stirring to combine. Whisk together the eggs in a small bowl then stir them into the brownie batter. Fold in the flour, just until combined, then pour the batter into the prepared pan, reserving 1/4 cup of the batter.