Eclair Cake

Directions

1. 1
   Boil the butter and water and add the flour.
2. 2
   Cool slightly. Add the eggs, one at a time.
3. 3
   Beat well after each addition. Spread the mixture on a greased 9 x 13-inch pan.
4. 4
   Bake at 400° for 3 minutes.
5. 5
   (It will look lumpy.) Cool thoroughly, then put on filling.