Slice the avocados in half, leaving the pit intact in the middle. Remove pit. Scoop avocado out of the skin with a spoon and cut in cubes.

Cut tomatoes and onions into small cubes.

Mash avocados with a fork or whisk until it becomes cream. Add tomatoes, onions and cilantro. Season with salt and black pepper. Set aside.

Remove all of the leaves from the cauliflower and remove the stem, leaving a nice hollow area with the outer part of the head intact. Use toothpicks to hold it together if it starts to fall apart.

Decorate the "brain" by putting the red food coloring between the florets to make veins.

Fill the "brain" with the guacamole dip and arrange the pits as eyes. Put the dark torilla chips around it.