Preheat the oven to 350 F. In a large bowl, mix together cake mix, peanut butter, eggs, and vegetable oil until smooth. Add in the food coloring, and mix until fully green. Fold in the chocolate chips.
Place the cookie dough onto a large ungreased baking sheet at least 2-inches apart. Place one Oreo cookie on each cookie dough, and cover with more cookie dough. Bake for 10-12 minutes.