Grease a 9 x 13-inch baking dish with butter and set aside.
Slice the bread into 1-inch thick slices (½-inch to 1-inch thick) and then cut in half.
Mix together eggs, milk, cream, vanilla, cinnamon and nutmeg in a large bowl.
Dip each piece of bread into the milk mixture and then place in a baking dish, overlapping as you go.
Pour remaining milk mixture over the bread and cover with foil for at least 1 hour (or overnight).
Preheat oven to 350°F when ready to bake. Keep French toast covered and bake for 30 minutes.
Prepare cinnamon sugar topping by mixing together 2 tablespoons of sugar and 1 teaspoon of cinnamon. Take off foil and pour melted butter over the top and then sprinkle on cinnamon/ sugar mixture.
Bake uncovered for an additional 15 minutes. Let cool slightly and serve warm.