Overnight French Toast - cooking recipe

Ingredients

1/4 c. (1/2 stick) butter, at room temperature
12 (3/4-inch thick) French bread slices
6 eggs
1 1/2 c. milk
1/4 c. sugar
2 Tbsp. maple syrup
1 tsp. vanilla
1/2 tsp. salt
powdered sugar
Maple-Walnut Syrup (recipe follows)

Preparation

Spread butter over the bottom of a heavy, large baking pan with 1-inch high sides.
Arrange bread slices in pan.