Prepare the Seitan: Thinly slice the prepared seitan. Use paper towels to pat each slice completely dry to ensure the best browning.
Heat the Skillet: Place a large nonstick or well-seasoned cast-iron skillet over medium-high heat.
Add 2 tablespoons (30 ml / 1 fl oz) of oil and let it get hot until it shimmers.
Sear in Batches: Carefully place the seitan slices in the hot oil in a single layer, making sure not to overcrowd the pan. You will likely need to work in batches.
Cook Until Golden: Cook for 3 to 5 minutes on the first side, or until the pieces are deeply browned and release easily from the pan.
Flip and cook the other side for another 3 to 5 minutes until equally browned.
Season and Serve: Transfer the seared seitan to a plate lined with paper towels to drain any excess oil. Immediately sprinkle with salt and pepper to taste.
Serve warm.
Pat It Dry, Seriously: For the crispiest, most delicious sear, moisture is the enemy.
Patting the seitan slices thoroughly with a paper towel before they hit the pan is the most important step.
Marinate for More Flavor: For an extra flavor boost, marinate the seitan slices for at least 15-30 minutes before cooking. A simple mix of soy sauce, garlic, and ginger works wonders.