1Heat oven to 375°F. In small bowl, mix oats, 1/2 cup Bisquick mix and the brown sugar. Cut in 1/4 cup firm butter with fork or pastry blender until mixture is crumbly; set aside.
2In medium bowl, mix 1 cup Bisquick mix and 1/4 cup softened butter. Add boiling water; stir vigorously until very soft dough forms. In ungreased 9-inch glass pie plate, press dough firmly, using fingers dusted with Bisquick mix and bringing dough onto rim of pie plate. Flute edge if desired.
3In 2-quart saucepan, mix pineapple juice, raisins, cornstarch, nutmeg and ginger. Cook over medium heat, stirring constantly, until mixture thickens and boils. Boil and stir 1 minute; remove from heat. Stir in pears. Spoon into pie plate. Sprinkle with topping.
4Bake 25 to 30 minutes or until crust and topping are light golden brown.