Preheat the oven to 375 degrees F (190 degrees C). Open cinnamon roll packages and set icing packs aside.

Chop cinnamon roll dough into 1/2-inch cubes and place in the bottom of a 9x13-inch baking dish. Pour melted butter over dough pieces and toss lightly; spread into an even layer.

Whisk cream, eggs, cinnamon, and vanilla together in a small bowl; pour evenly over the dough pieces. Drizzle maple syrup over top and sprinkle with brown sugar.

Bake in the preheated oven until golden brown, about 22 minutes. Drizzle icing over the top and serve.