My mom's favorite Christmas cookie is the Reese Peanut Butter Cookie. She e-mailed me the recipe and I assume that meant she wanted me to make them. It was pretty simple. I mixed a can of sweetened condensed milk, peanut butter, and flour. I then had to roll it into balls, which was a sticky mess. After that, I pushed a Reese cup into each of the balls, and shoved them in the oven. A few broke, but they turned out really good. My mom liked them!