Prepare the topping: Place all ingredients in a medium bowl and mash together with a fork until crumbly. Store in the refrigerator while the custard is being prepared.
Spray a 13X9-inch casserole dish with cooking spray. Place cubed croissants in the dish and set aside.
In a bowl, whisk together cream, pumpkin, milk, eggs, egg yolk, cinnamon and allspice. Pour over the croissant cubes. Press the croissant pieces down into the custard so they are thoroughly coated with the mixture. Cover and refrigerate for 1 hour.
Preheat oven to 350°F.
Bake for 35 minutes, and then sprinkle with the topping. Bake for additional 20-25 minutes, or until the custard is just set. Serve with pure maple syrup.
Notes
Recipe developed by Heather Baird and featured in the cookbook “Enjoy Cooking: The Costco Way”.
Recipe by Salu Salo Recipes at https://salu-salo.com/pumpkin-croissant-breakfast-bake/