Preheat oven to 200 degrees. Line a baking pan and set aside.
In a bowl, sift flour, corn flour, baking powder and salt.
Whisk in the brown sugar.
Add the cut cubes of butter and rub it in with your fingers till the mixture represents bread crumbs.
Toss in the butterscotch chips and pecans into it and mix.
In a bowl, whisk together the egg, 1/2 cup of the cream and vanilla till homogenous.
Add into the dry ingredients and just bring together to shape it. Just ensure that all the dry ingredients are moist.
Transfer onto the baking sheet and shape into a round shape with equal thickness. Cut into 8 peices of equal size and put a small separation between them.
Brush the remaining cream generously on top of all the scones.
Bake for 20 minutes. Take out, transfer to a cool rack. Enjoy the scones warm.