1Heat oven to 400°F. Generously grease 13x9-inch (3-quart) glass baking dish or pan. In 2-quart saucepan, heat water and butter to boiling. Reduce heat to low. Add baking mix all at once; stir vigorously about 1 minute or until mixture forms a ball. Remove from heat.
2With spoon, beat in eggs, 2 at a time, until dough is smooth and glossy after each addition. Spread in pan (do not spread up sides).
3Bake uncovered 30 to 35 minutes or until puffed and dry in center. Immediately after baking, spread pie filling over pancake. Cut into rectangles. Serve immediately.