Lightly grease a 9x13-inch pan and place French bread cubes in it. Sprinkle the bread cubes with the cinnamon.
In a medium bowl, whisk together eggs, brown sugar, milk, and vanilla. Pour mixture over bread cubes. Use the back of a spoon to press bread cubes into liquid.
Spoon apple pie filling evenly on top. Cover and refigerate 1 hour or overnight.
Remove from refrigerator and heat oven to 350 degrees.
While oven heats make the streusel. Mix together all ingredients and sprinkle over the casserole.
Bake for 45 to 50 minutes. Drizzle with caramel sauce and serve.