Line a loaf pan with aluminum foil, and then parchment paper. Add seitan, smashing down until evenly distributed. Fold over parchment and then the foil to seal.
Set oven timer for 90 minutes and place meatloaf in oven.
5-10 minutes before the timer goes off - remove the loaf from the oven and remove the top piece of foil and parchment paper, exposing the top of the meat loaf. Brush with ketchup if desired.
Continue baking for another 5-10 minutes.
Tips are always appreciated!