Begin all the components of the recipe 24 hours before you want to bake.
In the bowl of a stand mixer, add the yeast and water and whisk together. Add the flour, salt, sugar and egg. Mix together using the hook attachment on the lowest speed setting.
Add softened butter to the dough, one cube at a time, allowing each piece to mix in before adding the next. Turn the mixer to medium speed and mix until the dough is smooth.
Transfer the dough to a bowl, cover, and let it proof in the fridge for 18-24 hours.
Prepare the cornmeal brown butter filling by toasting cornmeal, adding butter, and allowing both to turn golden brown. Cool and whisk in brown sugar and salt.
Prepare the cornmeal brown butter crumble topping by toasting cornmeal and browning butter, then transfer to a bowl and let sit at room temperature overnight.
Roll out the dough into a square, spread the brown sugar filling, roll the dough, cut into cinnamon rolls, place on a baking sheet, and let rise for 2 hours.
Preheat the oven to 400°F. Bake the cinnamon rolls for 22-25 minutes or until golden.
Prepare the cornmeal crumble topping by mixing with turbinado sugar and salt. In a separate bowl, whisk together the bourbon glaze.
Brush the baked cinnamon rolls with the bourbon glaze, then scatter the cornmeal brown butter crumble topping on top. Serve warm.
