For the Dough
2 1/4 teaspoons (1 envelope) active dry yeast
2 tablespoons warm water (warmer than body temperature)
pinch of sugar
3 to 3 1/2 cups all-purpose flour, divided
1/4 cup granulated sugar
3/4 teaspoon kosher salt
4 tablespoons (2 ounces) unsalted butter
1/2 cup whole milk
2 large eggs, at room temperature
1 teaspoon pure vanilla extract

For the Filling
9 ounces milk chocolate, coarsely chopped
3 ounces bittersweet chocolate, coarsely chopped
1 1/2 sticks (3/4 cup) unsalted butter
pinch of salt
1/4 teaspoon ground cinnamon
2 tablespoons honey
1 1/2 cups finely ground chocolate wafer cookies (I sure did use Oreos without the cream)

For the Topping
1/2 cup all-purpose flour
1/2 cup packed light brown sugar
1/2 teaspoon ground cinnamon
1/4 teaspoon freshly grated nutmeg
1/4 teaspoon salt
4 tablespoons cold unsalted butter, cut into cubes