In a saucepan, melt butter over medium heat. Stir in apples. Cover and cook over medium heat, stirring occasionally, until slightly softened, about 5 minutes. Spray a shallow 1 1/2 quart (1.5 L) baking dish with cooking spray. Combine apples, bread cubes and raisins in dish. In a medium bowl, beat together eggs, milk, brown sugar, vanilla, cinnamon and nutmeg until sugar is dissolved. Pour over apple mixture. Cover and refrigerate at least 4 hours. Preheat oven to 350 F (180 C). Bake pudding until knife inserted in center comes out clean, about 45 to 55 minutes. Serve hot, warm or chilled.
Preparation: 15 minutes
Cooking: 45 minutes
Refrigeration: 4 hours