1Heat oven to 400ºF. Generously grease rectangular baking dish or pan, 13x9x2 inches. Heat water and butter to boiling in 2-quart saucepan. Add Bisquick all at once. Stir vigorously over low heat about 1 minute or until mixture forms a ball; remove from heat.
2Beat in eggs, two at a time, with spoon; beat until smooth and glossy after each addition. Spread in pan (do not spread up sides).
3Bake 30 to 35 minutes or until puffed and dry in center. Immediately spread pie filling over pancake. Cut into rectangles; serve immediately.