Place bread cubes in a large bowl. In a mixing bowl whisk together remaining ingredients except blackberries. Pour mixture over bread cubes and toss to coat. Let soak for about 15 minutes.
Meanwhile preheat oven to 350 degrees. Place paper cups into a cupcake tin. Once bread has soaked fold in blackberries. Fill cups about 2/3 full with bread mixture making sure to get some blackberries in each cup.
Bake 350 degrees for 25-30 minutes.
Cool completely before serving. Drizzle with White Chocolate Limoncello Sauce and garnish with more blackberries.