Pre-heat oven to temperature indicated on brownie batter box.
Prepare the brownie batter according to the directions on the box.
Lightly coat baking pan with the non-stick cooking spray.
Pour brownie batter into the prepared pan, bake according to box directions.
Once baked, allow brownies to cool and cut them into 12 equal sized rectangles (approx 4 x 3)
Carefully press one candy eye into each brownie on the right side about halfway down, be certain to leave enough space by edges to draw a circle around each eye.
Using the black decorating icing/gel, draw a circle around the candy eye, make marks along the left side from top to bottom to resemble the book seams. Slightly further in on the brownie create lines vertically or in swirls (your choice) to add character to each brownie spell book. Add half circles to the corners above and below the eye.