Preheat: Preheat oven to 450°F (230°C).
Bake vegetables: Add onion, carrots, celery, and ginger to a large nonstick baking sheet. Drizzle with grapeseed oil, toss to coat. Sprinkle with ¼ teaspoon of the salt, and pepper. Bake until the edges are beginning to brown, about 20 minutes.
1 yellow onion, chopped, 2 carrots, chopped, 2 ribs celery, chopped, 1 inch knob of ginger, 1 tablespoon grapeseed oil, ¾ teaspoon fine sea salt, divided, ⅛ teaspoon black pepper, divided
Meanwhile, cook lentils: Add red lentils, garlic, broth, curry powder, and cumin to a medium saucepan. Cover with a lid, bring to a boil, then reduce to a simmer. Cook until the lentils are soft, 15 to 20 minutes. Stir in coconut milk, and the remaining ½ teaspoon of salt. Remove from heat.
1 cup dry red lentils, 2 cloves garlic, minced, 3 cups vegetable broth, 1½ teaspoons curry powder, ½ teaspoon cumin, 1 (14 fl oz/398 ml) can full-fat coconut milk, ¾ teaspoon fine sea salt, divided
Add pumpkin, bake again: Use a spatula to push the roasted vegetables to one side of the pan. Spread the pumpkin puree onto the other side of the pan. Return to the oven, and bake until the edges of the puree begin to brown, about 10 minutes.
1 (15 oz/14 fl oz/398 ml) can pumpkin puree
Blend: Scrape the vegetables and pumpkin puree into a blender. Add the lentil coconut mixture. Blend until smooth and creamy. (Thin with extra vegetable stock if desired). Serve hot, topped with garnishes of your choice.
Fresh herbs, Toasted pepitas, Yogurt or sour cream, Red pepper flakes