Zombie Brain Donut (7/10)

Not for the faint of heart, this donut mimics the appearance of a brain.

Key features:

• Pink or gray frosting base

• Piped frosting in squiggly patterns to resemble brain folds

• Red gel icing for a “bloody” effect

Why it’s a hit: The gross-out factor makes this donut a conversation starter and perfect for Halloween-loving adults.