Pear and Apple Gratin

Procedure

1. Peel and core the apples and pears. Chop into bite-size pieces.
2. Heat the sugar to a golden caramel. Add the butter, then the apples, pears, and vanilla. Cook gently until the fruit is tender. Add the Calvados. Remove the fruit with a slotted spoon and reserve.
3. Sift the flour with the ground almonds into a bowl. Add the sugar and mi