In a small bowl combine apples, brown sugar, lemon juice, cinnamon, nutmeg, cornstarch and cardamon. Stir until all ingredients are well combined and apples are coated.
Pour the apple mixture into a mini cocotte, bread pan, or mini casserole dish. Spread the butter cubes over the top of the apples. Cover with a lid or foil.
Bake for 20 minutes or until apples are tender. Remove from oven and stir. Serve hot.