Place bread in single layer in 13 x 9 x 2 -inch baking dish. Whisk together eggs, milk, sugar, liqueur, vanilla, nutmeg and salt. Pour over bread, turning once to coat evenly. Refrigerate, covered, several hours or overnight. Preheat oven to 400?. Place 1/3 cup butter in 15 x 10 - inch jelly roll pan; place in oven to melt butter. Remove from oven; tilt pan to coat evenly with butter. Arrange bread in single layer in prepared pan. Bake; uncovered about 25 minutes or until firm and golden brown. Sprinkle over baked French toast. Broil, about 5 inches from heat, watching carefully, about 1 minute or until topping begins to bubble.