Yes they are original VAG pedals and fits just as you described it. Only the brake pedal cap has a small nipple or what ever you call it that goes through the brake pedal to ensure it won’t slip under hard braking.
And by the way, now that I remember mine's aren't Audi TT pedals. They are Fabia/Octavia RS pedals. Spare part number is FCA000001 and I paid 35 euros or 23.75 GBP for the whole set.