Preheat oven to 350°F (177°C).
Grease an 8×8 inch or any 3-4 quart oven-safe dish with nonstick spray.
Minimize the complete challah loaf into 1″ cubes. Unfold half of the cubes into the baking pan.
Utilizing a handheld or stand mixer fitted with a whisk attachment, beat the room-temperature cream cheese on medium-high pace till fully easy and a bit fluffly.
Then, beat within the confectioners’ sugar and 1/4 teaspoon vanilla extract till mixed into the cream cheese combination.
Drop spoonfuls of cream cheese combination on high of the primary layer of bread. Be certain that the cream cheese combination is unfold out all through the pan.
Add the remaining bread cubes on high.
Whisk the eggs, plant-based milk, pumpkin spice, brown sugar, pumpkin and remaining vanilla collectively till easy.
Pour the combination over the bread, and switch the combination with a spoon, being cautious to not squish the bread an excessive amount of.
Put together the crumb topping: Whisk the brown sugar, nuts, and pumpkin spice collectively in a medium bowl. Minimize within the chilly cubed butter with two forks. Sprinkle the topping evenly over the soaked bread.
Bake uncovered for 50-55 minutes or till golden brown on high, or a knife scraped excessive makes that tremendous satisfying crunch. Drizzle with non-compulsory maple syrup or mud with confectioners’ sugar. Serve heat.
Cowl leftovers tightly and retailer within the fridge for 2-3 days, or freeze and re-heat for as much as two weeks.