In mixing bowl, cream together butter and sugar. Add eggs, one at a time. Mix well. Add remaining ingredients except pie filling. Beat well. Spread half of the batter in a greased 13 x 23 cm baking pan. Spread cherry pie filling over batter. Cover with remaining batter. For topping: combine all ingredients except butter and nuts in a small mixing bowl. Cut in butter. Stir in nuts. Sprinkle topping over batter. Bake @ 350 degrees about 45 minutes until cakesprings back when lightly pressed with finger.