Directions:

In a small heavy saucepan melt butter with brown sugar and corn syrup over moderate heat, stirring until smooth. Pour into a 13- by 9-inch baking dish. Cut 1-inch-thick slices from center of bread, reserving ends for another use, and trim crusts. Arrange bread slices in one layer in baking dish, squeezing them slightly to fit.

In a bowl whisk together eggs, half and half, vanilla, Grand Marnier and salt until combined well and pour evenly over bread. Chill bread mixture, covered, at least 8 hours and up to 1 day. Preheat oven to 350 degrees and bring bread to room temperature. Bake bread mixture, uncovered, in middle of oven until puffed and edges are pale golden, 35-40 minutes.

To serve, invert on a large platter, dust with powdered sugar and garnish with strawberries or blueberries.