"Make the Streusel: Combine all streusel ingredients in a bowl, mixing well until resembles chunky, damp sand. Use clean fingers mix if needed, but don't overwork it. Cover and keep in fridge to chill.Preheat oven to 350F with rack on lower middle position.Grease a 8x8 baking dish with butter on bottom and up sides.In a large bowl, combine eggs, vanilla, sugar, salt, cinnamon, cloves, and nutmeg. Hand-whisk to thoroughly incorporate. Whisk in pumpkin until smooth. Add bread cubes to pumpkin mixture and gently toss to fully coat all bread cubes in bowl. It will seem thick and gloppy, which is ok.Transfer bread/pumpkin mixture evenly into buttered baking dish. Sprinkle chilled streusel evenly over the top. Bake uncovered 40-45 minutes, or until a knife inserted in center comes out mostly clean. The topping should be bubbling at the edges, and the center should feel set.Let stand at room temp 10 minutes. Serve warm with pure maple syrup."