Preheat oven to 350ยบ.
Melt butter in the bottom of a 9x9 pan.
Mix together egg, heavy whipping cream, cinnamon and vanilla.
Unroll cinnamon rolls and cut them into small pieces, like pizza slices.
Mix cinnamon roll pieces into egg mixture until all pieces are evenly coated.
Pour into buttered pan and baker for 18-25 minutes, until cooked through.
Warm icing for cinnamon rolls and pour over cinnamon roll bake. Sprinkle with powdered sugar. May be served with maple syrup.