Perfect Peach Kuchen

Preheat oven to 400°F.
Peel and slice peaches. If using fresh peaches cut them in half and drop into boiling water for about 45 seconds. This allows you to easily slide off the skins. If the skin is still hard to remove just put it back in the water for a few more seconds.
Mix butter, 1/2 c sugar, egg yolks, flour, and salt with an electric mixer. Mixture will be crumbly.
Grease a 9x12 pan and press mixture into it, spreading it about an inch up the side of the pan.
Cover the crust with neat rows of the peeled peaches.
Make the custard topping by beating the whole eggs, 3/4 cup sugar, and whipping cream. Pour this over the pan and sprinkle with cinnamon.
Bake for 25 mins or until the custard is firm. The size of your pan and depth of the custard detemines cooking time, so be sure that the custard is set! It should not jiggle when you shake the pan.
Serve warm or chilled with leftover whipping cream.