Source: Recipes From The Marshmallow Peeps Factory

1 (18.25 ounce) white cake mix or scratch cake
    ingredients (your choice)
White frosting
Grated coconut
Green food coloring
Marshmallow Peeps (yellow, pink, white, blue or lavender)
Peeps Jelly Beans or Teenee Beanee Gourmet Jelly Beans

Bake cupcakes as per directions on box and frost. Color grated coconut with green food coloring. Top with Marshmallow Peeps (one sits perfectly on a cupcake) and add a few Peeps Jelly Beans or Teenee Beanee Gourmet Jelly Beans (they make great eggs). (Note: If you dont like coconut, use green sugar sprinkles. You dont get the same grass effect as the coconut, but you might like the taste better). Another option is to pipe a "nest" of green icing to encircle the top and place a Peep in the center. Sprinkle with colored sprinkles for a finishing touch.