Preheat oven to 350 degrees F. Liberally grease a 24-cavity miniature muffin pan with cooking spray and set aside. In a large bowl, combine the cake mix, egg and oil with a spoon until a soft dough has formed.

Drop rounded Tablespoonfuls of dough into each muffin cavity, then gently flatten them down with your fingers. Bake the cookie cups for about 12-15 minutes or until the edges are set; do not over-bake. Allow the cookie cups to set in the muffin cups for about 5 minutes.

Gently use the handle of a wooden spoon to make an indentation in the middle of the cookie cup, careful not to puncture through the cup. Immediately fill the well with a heaping pinch of the chocolate-cherry morsels. Allow the cups to cool completely before gently popping them from the muffin tin.

Remove the cap and foil lining from the frosting and microwave it on medium-high power for about 30 seconds, stirring vigorously so it's smooth and pourable. Dunk each cookie cup into the melted frosting briefly, covering the top. Allow excess to drip off and return the cookie cups to a foil-lined baking sheet or wire rack. Immediately top with a maraschino cherry. Repeat with remaining cups, then serve!