Preheat your oven to 375°F (190°C). Unroll the crescent roll dough and separate it into triangles.
In a small bowl, mix together the granulated sugar and ground cinnamon.
Brush the melted butter over the crescent roll triangles, then sprinkle the cinnamon-sugar mixture evenly over the dough.
Roll up each triangle from the wide end to the point, creating a tight roll.
Shape the rolls into a brain-like form by twisting and pinching the ends together, then place them on a baking sheet lined with parchment paper.
Bake in the preheated oven for 12-15 minutes or until golden brown.
While the rolls are baking, prepare the icing by mixing the softened cream cheese, powdered sugar, vanilla extract, and a few drops of red food coloring (if using) in a bowl until smooth.
Once the rolls are done, let them cool for a few minutes before drizzling the cream cheese icing over the top. If desired, sprinkle chopped nuts for added texture.
Serve warm and enjoy your spooky treat!