Step 1In a medium bowl, beat the eggs. Whisk in the cream, then the vanilla, sugar, cinnamon and nutmeg. Pour the batter into a wide, shallow baking dish.
Step 2Soak the bread slices on each side, about 2 minutes per side.
Step 3Heat a large, heavy-bottom skillet over medium heat until hot. Melt a tablespoon of butter in the hot pan, then add 2 slices of the bread. Reduce the heat and fry the slices gently on each side until the bread is crisp and golden-brown, and the inside of the bread is cooked through, 3 to 4 minutes per side. Cover the pan while cooking so the bread toasts evenly and thoroughly.
Step 4Remove the toast and hold on a baking sheet in a warm oven until all of the slices are toasted. Repeat with the remaining slices.
Step 5Slice each piece of toast in half and plate 3 half slices on each of 4 plates. Dust each with powdered sugar, if desired, and serve with warm maple syrup.