Make flax egg: Mix the ground flax with water in a small bowl and set aside.
5 tbsp water, 2 tbsp ground flax
Pulse mushrooms: Add mushrooms to food processor and pulse a few times but not too fine.
200 grams shiitake mushrooms1
Pulse veggies: Add onions, carrots, and celery to food processor and pulse a few times until crumbly but not too fine.
1 small onion, 1 celery, 2 carrots
Parcook veggies: Heat olive oil in a skillet over medium heat. Add onions, celery, carrots, garlic, and a pinch of salt and cook just until the veggies are crisp-tender, about 5 minutes. Be careful not to overcook the veggies - they should retain some crunch.
1 tbsp olive oil, 3 cloves garlic
Toast tomato paste: Add tomato paste and stir for 30 seconds, then remove from heat. Transfer the veggie mixture to a bowl to cool.
2 tbsp tomato paste
Cook mushrooms: Add mushrooms to the same skillet and cook down for a few minutes to release the liquid. Continue cooking until most of the liquid has evaporated.
Pulse oats and walnuts: Add oats to food processor and pulse to form a flour. Add walnuts and pulse a few times until crumbly but not finely ground. Transfer to a large mixing bowl.
1 cup rolled or quick oats, ⅓ cup (40g) walnuts
Pulse tofu and lentils: Add tofu and lentils to food processor and pulse a few times until crumbly but not finely ground. Add to the mixing bowl.
16 oz firm tofu, 2 cups cooked lentils
Combine mixture: To the same mixing bowl, add the flax egg, chickpea flour, cooked veggies, and all the spices and seasonings.
¼ cup chickpea flour, 1 tsp dried thyme, ¾ tsp dried oregano, ½ tsp paprika, ½ tsp coriander, ½ tsp cumin, ⅛ tsp nutmeg, ⅛ tsp pepper, 2 tbsp nutritional yeast, 1 tbsp mustard, 2 tsp miso
Make glaze: Mix ketchup and Worcestershire sauce together. Add a splash of water if needed to thin the sauce to a pourable consistency. Add about half of the glaze to the meatloaf filling, and mix until everything is well combined.
5 tbsp ketchup, 5 tbsp Japanese Worcestershire/Chuno Sauce*2
Rest: Cover the bowl and rest in the fridge for at least 30 minutes to allow the mixture to thicken.
Prep oven and pan: Preheat oven to 350°F/180°C. Line a 9x5-inch loaf pan with parchment paper hanging over the sides for easy removal. Other pan sizes: Two 8x4-inch loaf pans, one 8x4-inch loaf pan plus two mini loaf pans (5.5x3-inch), or 12 muffins.
Add mixture to pan: When ready to bake, press the mixture into your prepared loaf pan(s). Pack it down tightly.
Bake and glaze: Bake for 45 minutes uncovered. Brush half the remaining glaze on top. Bake for 10 minutes, brush the rest of the glaze on, and bake for another 10 minutes.For mini loaves, bake 30 minutes uncovered, glaze, and bake another 10 minutes. For mufins, bake 25 minutes uncovered, glaze, and bake another 5 minutes.
Rest: Remove the meatloaf from the oven and let it rest for at least 20 minutes (10 minutes for mini loaves or muffins) before slicing.
Notes
1) Mushrooms: I recommend shiitake mushrooms for the best flavor and texture, but baby bella and white button mushrooms will also work.2) Japanese Worcestershire Sauce: Check the ingredients to ensure it's vegan-friendly. Some Worcestershire sauce contain fish/anchovies. Japanese Chuno Style Worcestershire Sauce is usually vegan-friendly.