Step 1: Cook the Lentils

• Rinse the lentils in a fine-mesh sieve under cold water to remove any debris.
• In a medium saucepan, combine the rinsed lentils with 2 cups of vegetable broth. If needed, add extra broth or water to ensure the lentils are covered by about an inch of liquid.
• Bring to a boil, then reduce heat to low, cover, and simmer for 20-25 minutes, or until the lentils are tender but not mushy. They should still have a slight bite.
• Drain any excess liquid from the lentils and set aside to cool slightly.

Step 2: Sauté Vegetables

• Heat olive oil in a large skillet over medium heat.
• Add the chopped onion and sauté for 5-7 minutes, or until softened and translucent.
• Add the minced garlic, diced carrots, and diced celery to the skillet and sauté for another 5-7 minutes, or until the vegetables are tender-crisp and fragrant.
• Add the finely chopped mushrooms to the skillet and sauté for 8-10 minutes, or until the mushrooms have released their moisture and are nicely browned and softened. Stir occasionally to prevent sticking.
• Season the vegetables with salt and black pepper to taste.

Step 3: Combine Wet and Dry Ingredients

• In a large mixing bowl, combine the cooked lentils, sautéed vegetable mixture, dried cranberries, chopped walnuts or pecans, breadcrumbs, flax egg (flaxseed meal mixed with water), soy sauce or tamari, fresh thyme, and fresh rosemary.
• Mix all the ingredients thoroughly until well combined. The mixture should be moist but not overly wet, and it should hold together when pressed. If the mixture seems too dry, add a tablespoon or two of vegetable broth. If it seems too wet, add a tablespoon or two of breadcrumbs.

Step 4: Shape and Bake the Loaf

• Preheat oven to 375°F (190°C).
• Lightly grease a 9×5 inch loaf pan with olive oil or cooking spray. You can also line the loaf pan with parchment paper, leaving an overhang on the sides for easy removal.
• Transfer the lentil mixture to the prepared loaf pan and press it down evenly to create a loaf shape. You can use the back of a spoon or your hands to shape it.
• Bake in the preheated oven for 45-50 minutes, or until the loaf is firm to the touch and lightly browned on top. The internal temperature should reach 165°F (74°C).
• If the top starts to brown too quickly, you can loosely tent the loaf with aluminum foil for the last 15-20 minutes of baking.

Step 5: Cool and Serve

• Remove the loaf from the oven and let it cool in the loaf pan for at least 10-15 minutes before slicing and serving. This allows the loaf to firm up and makes it easier to slice.
• If you used parchment paper, use the overhang to gently lift the loaf out of the pan.
• Slice the Mushroom Lentil Loaf into thick slices and serve warm or at room temperature.