Casserole - Slice French bread into bite-sized pieces. Generously butter a 9x13 pan, and put bread into pan.
In a large bowl, combine the eggs, half-and-half, sugar, vanilla, cinnamon, nutmeg, and salt. Beat until blended but not too bubbly. Pour mixture over bread slices, making sure all the bread is covered evenly with the milk-egg mixture. Cover with foil and refrigerate overnight.
The next day, preheat oven to 350. Spread Praline Topping evenly over the bread and bake for 45 minutes until puffed and lightly golden. Serve with maple syrup.
Topping - Combine all ingredients in a medium bowl and blend well. Spread over bread as directed above. You can add blueberries on top. Scrumptious!