I had to bring cookies to a church function.  My husband recommended the Sierpinski Carpet fractal cookies shown on evilmadscientist.com.  I thought the square shapes might be a little boring and decided to do Sierpinski triangle cookies instead.

 I made them green and added peppermint extract.  The recipes I used were:

1 1/4 cups all-purpose flour

1/2 cup unsweetened cocoa powder

1/4 teaspoon salt

1/2 cup butter, softened

1 cup white sugar

1 egg

for the chocolate part and

3 cups all-purpose flour 

3/4 teaspoon baking powder 

1/4 teaspoon salt

1 cup unsalted butter, softened 

1 cup sugar 

1 egg, beaten 

1 tablespoon milk

for the green part.  I didn't chill the dough at all because I wanted it flexible to work with.  It was tougher than I thought it would be to shape the triangular logs of dough, but they look pretty decent for cookies.

I ended up with lots of scraps.  I rolled them into a log and made swirled round cookies (I didn't want to waste the cookie dough).

Sadly, nobody at church even noticed that they were fractals.  *sigh*

baked cookies: