Preheat oven to 375°F. Pull the kataifi apart with your fingers or with scissors, tearing it into chunks a couple inches long. Toss it in a bowl with the butter, sugar and cinnamon.
Press into mini muffin cups, pressing the mixture loosely into the bottom and up the sides, to form a nest. Bake for about 10 minutes, until pale golden. Let cool and then fill with chocolate eggs or jelly beans.