1For crust, combine cookie crumbs with butter. Press into buttered 9" springform pan. Bake 350 degrees for 10 minutes.
2For filling, combine softened cream cheese, sugar banana, mixing at medium speed until well blended. Add eggs, one at a time, mixing well. Pour over crust. Bake 350 degrees for 35 minutes. Toward the last minutes of the baking, start the meringue.
3For meringue, Beat egg whites and cream of tartar till frothy. Gradually add sugar, beating continuously, until stiff peaks form. Spread meringue over hot filling. Bake for 10 minutes longer or until lightly browned.
Cool cake in pan for 10 minutes. Run knife around pan. Remove rim of cake pan. Chill.