Apple And Pear Gratin

Directions

1. 1
   Preheat oven to 325. Butter the sides and bottom of a 9-inch baking dish that is at least 2 inches deep, or a 9-inch springform pan.
2. 2
   Put the eggs and egg yolks and the sugar in the bowl of a mixer. Beat at a high speed till you see pale yellow ribbons form.
3. 3
   Mix in the rum and vanilla. Add the flour and mix well. Transfer to a mixing bowl.
4. 4
   In a clean mixing bowl, whip the heavy cream to firm peaks, then fold it carefully into the egg mixture with a rubber spatula. Pour the batter into the buttered dish.
5. 5
   Peel and core the apple and pear and slice them crosswise into thin half moons. Arrange over the batter in the baking dish, alternating the apple and pear slices.
6. 6
   Do not be concerned if they sink into the mixture - they will all eventually be embedded in it.
7. 7
   Place in the preheated oven and bke till the top has turned golden brown, about 45 minutes.
8. 8
   Serve warm or chilled.