Use a vegetable spray to lightly grease the cookie sheets.
Place apple in a microwave-safe bowl.
Cover and cook on High for 2 minutes, stirring after 1 minute.
Uncover and continue cooking on Medium until apple mixture is very thick and tender.
Stir in cake mix.
Drop from a teaspoon about 2 in.
(5 cm) apart onto the greased cookie sheets.
Bake at 375°F (190°C) for 8 to 10 minutes.