Start a pot of boiling water and insert a slightly oiled steamer.
Put all ingredients in food processor and process until well mixed and doughy.
Cut dough into pieces, 6 to 8, or 16 to 20 nuggets.
Steam 30 minutes, flipping half-way.
Another way to cook them is to drop into boiling seasoned water for 20 minutes, then bake at 425° for 20 minutes on a parchment-lined baking sheet. I cook the nuggets this way.
Orange Sauce
Mix together all the sauce ingredients except the cornstarch and water.
Then whisk together the cornstarch and water in a separate bowl before adding to the other ingredients. Whisk to combine.
Add the seitan to the sauce. Let simmer 1 to 2 minutes as the sauce thickens and coats the seitan.
Notes
Garnish with green onion and sesame seeds if desired. Serve with rice and a green vegetable like broccoli or green beans or assorted stir-fry vegetables.