Preheat the oven to 350°F.
Slice the Challah bread in the hassle-back style and arrange it in a casserole dish.
In a medium-sized bowl, whisk together the eggs, milk, vanilla, and cinnamon until smooth.
In another bowl, combine cream cheese, lemon juice, lemon zest, raspberry jam, powdered sugar, and gently fold in the raspberries.
Use a spatula to spread the raspberry mixture between the slices of Challah bread.
Pour the egg mixture over the bread, ensuring it covers the loaf completely.
Sprinkle some powdered sugar on top.
Bake the French toast for 40 minutes or until it turns a beautiful golden brown.