Step 1

Preheat oven to 375 degrees F (190 degrees C).

Step 2

Butter a 10 1/2-inch round baking dish or pie plate. Fan pear slices out in a single layer in the bottom.

Step 3

Beat eggs and sugar together using an electric mixer fitted with a paddle attachment on medium speed until light and fluffy, about 3 minutes. Mix in heavy cream, flour, kirsch, lemon zest, vanilla extract, cardamom, and salt on low speed until batter is smooth. Set batter aside to rest, about 15 minutes.

Step 4

Pour batter over the pears in the baking dish.

Step 5

Bake in the preheated oven until set and golden brown, 40 to 45 minutes. Let cool briefly, about 15 minutes. Serve warm, sprinkled with confectioners' sugar.