Preheat oven to 350°F. In a large bowl, whisk together eggs, yolks, and sugar. Pour cream mixture into egg mixture and whisk until well blended.
Break croissants into 1 1/2-inch pieces and line bottom of a 9" x 13" glass baking dish. Stir chocolate chips into cream mixture and pour over croissants. Bake 50 to 60 minutes, until still jiggly in center. Cool on a rack 30 minutes. Serve warm with vanilla ice cream.
From Chef Peter Davis of Henrietta's Table at the Charles Hotel, in Cambridge, Massachusetts