French Toast Strata - With fruit

3 tablespoons butter 2 medium apples , peeled and coarsely chopped 3/4 cup raisins 1/2 cup finely chopped walnuts 1/4-1/3 cup sugar (or to taste) 1/2-1[...]

1/2 loaf French bread or 1/2 loaf Italian bread (1-pound) 2 tablespoons butter or 2 tablespoons margarine 1 large cooking apple , peeled and coarsely chopped[...]