Make Chia Egg: In a small bowl, mix ground chia seeds with 1/4 cup of water. Let it sit for 5 minutes to thicken. If using whole chia seeds, blend them into powder first.
Prepare Mushrooms: Finely chop shiitake mushrooms using a food processor.
Sauté Mushrooms: Heat 1 tablespoon of vegan butter or olive oil in a skillet. Sauté the mushrooms for 5 minutes, then add the tamari (soy sauce) and cook until any excess moisture evaporates. Transfer to a mixing bowl.
Prepare Beans: Rinse canned white beans well, drain them, and dry them with a towel. (I cooked my beans in a pressure cooker, but canned beans work fine too.) Pulse the white beans in a food processor a few times until coarsely chopped. Do not over process. Transfer to the mixing bowl. Process Walnuts: Pulse walnuts in a food processor until coarsely ground, similar to breadcrumbs. Transfer to the mixing bowl.
Combine Ingredients: To the mixing bowl, add chopped onion, minced garlic, thickened chia egg, tomato paste, psyllium husk (or oat flour), cooked quinoa, nutritional yeast, smoked paprika, ground cumin, black pepper, chipotle chili pepper, and salt.
Mix: Using your hands, mix everything together until well combined. The mixture should be semi-soft and slightly sticky.
Chill for Shaping: Freeze the mixture for 10 minutes to make it easier to handle.
Shape Sausages: Divide the mixture into 6-7 portions, using about 1/3 cup per sausage. Shape into sausage-like rolls and place them on a parchment-lined plate. Refrigerate for 20 minutes to firm up.
Wrap and Steam: Wrap each sausage tightly in cling film first to help shape them into a firm log, then wrap with foil on top. This prevents the sausages from unraveling while steaming. Place them in a steamer basket over boiling water and steam for 35 minutes.
Pan-Fry (Optional): For a crispy outer layer, heat a bit of oil in a skillet over medium heat. Pan-fry the sausages for 7-10 minutes, turning until browned and heated through.
Serve: Your vegan sausages are ready! Serve them hot with mustard and BBQ sauce, or in a bun like a classic hot dog. You can also grill them for extra flavor.
Tip: You can sauté the onions and garlic with the mushrooms and add all the spices during cooking instead of mixing them into the dough at the end—both methods work well!