Preheat your oven to 350° F.
In your mixing bowl, cream together cake mix, oil, eggs, and green food coloring. Make sure that you don’t go overboard with the food coloring, you are looking for a light to medium color green.
After you get done mixing, wrap the top of the bowl and chill the dough for 10-15 minutes.
Then, you drop one Tablespoon, at a time, of dough into the bowl of confectioner’s sugar and roll into balls.
Place on a baking sheet and just lightly press a heart candy or sprinkle into the middle (or with your finger, lightly press into the middle making a little hole, then sprinkle some small Valentine sprinkles).
Bake the cookies for 8 minutes or until they are set. They will look puffy when they are out of the oven, but once cool, they will be settle down looking like cookies.
Let them cool on a plate or wire rack for 2 minutes. Then voila!! You have made the Grinch cookies!!