Preheat oven to 350 degrees.
Lightly grease an 8×8 in. baking pan.
Line bottom of pan with bread. In a large bowl, beat together eggs, milk, 2 T sugar, salt and vanilla.
Pour egg mixture over bread. Dot with butter; let stand for 10 minutes.
Combine remaining 2 T sugar with cinnamon and nutmeg and sprinkle over the top.
Bake for 45-50 minutes until top is golden.