Preheat oven to 350F degrees.
Spray large baking dish with nonstick baking spray and place cinnamon rolls in.
Pour the heavy cream over the top of the cinnamon rolls and place in the oven for 25-30 minutes.
If you're adding in the additional ingredients (which I highly recommend!) then evenly distribute the brown sugar over the top of each bun, followed by the butter and a sprinkle of cinnamon.
Remove from heat and add icing (that it comes with or that you make by hand) on top.
Serve immediately.
