Preheat oven to 375 degrees. Grease a 9x13 inch baking dish with butter and set aside.
Separate the cinnamon rolls out into 8 rolls per tube and cut each roll into 6 pieces. Place in prepared baking dish in an even layer.
In a large bowl whisk together the cream, eggs, flour, cinnamon, and vanilla.
Pour the cream mixture over the rolls and bake in the preheated oven for 25-30 minutes until golden and cooked through.
Meanwhile, make the sauce during the last 10-15 minutes of the casseroles cooking time.
FOR THE SAUCE:
Melt the butter in a medium sauce pan over medium heat.
Whisk in the brown sugar, vanilla, cinnamon, and salt. Bring to a bubble while whisking constantly.
Stir in the sliced bananas and chopped pecans and stir gently for 1-2 minutes until heated through.
Pour the sauce evenly over the cooked casserole.
Serve the casserole immediately, topped with ice cream if desired.
Notes
NOTE: I do not recommend making this in advance for best results. This casserole is quick and easy to put together in the morning!NOTE: You can use milk or half & half if preferred.