Spray a large bowl with cooking spray and place the dough inside and move the dough around so it's oiled on all surfaces, this helps prevent a skin from forming.
In a medium pot over low-medium heat cook together the butter, brown sugar, salt, maple syrup, and vanilla. Mix constantly cook on an aggressive simmer but not boiling. Let it cook for 2 minutes.
Place rolls into prepared pan on top of sticky toffee sauce, at this point, you can lightly cover with clean kitchen linen and let rise in a warm place until doubled in size 45 minutes to an hour
Once the dough has risen, slightly warm the heavy cream in the microwave then evenly pour the cream over the top of the unbaked rolls just before placing the rolls in the oven.