Form Potato: Take 3 generous scoops of vanilla ice cream and place in aluminum foil. Mold to shape of baked potato and return to freezer until firm, about 1 hour.
Make Chives: Mix roasted pecan bits with green food coloring until well coated.
Make Butter Patty: In mixer, cream butter with powdered sugar and add yellow food coloring. Spread 1/4-inch thick on foil-lined pan and freeze about 20 minutes. Remove and cut in 1-inch pats.
Assembly: Spoon a generous amount of chocolate sauce on the bottom of a dessert plate. Unwrap frozen "potato" and dust with cocoa powder all over. Spoon whipped cream on top of potato, sprinkle with "chives", and top with "butter patablespoon".
Put all ingredients in glass bowl and microwave for 1 minute on high. Remove and whisk until smooth.