In a large pot, heat the olive oil over medium heat. Add the chopped onion and sauté for about 5 minutes until softened and translucent.
Stir in the minced garlic and grated ginger, cooking for an additional 2 minutes until fragrant.
Add the red curry paste, turmeric, and cumin to the pot, stirring well to coat the onions. Cook for another minute.
Pour in the pumpkin puree and vegetable broth, and mix well. Bring the mixture to a simmer.
Once simmering, stir in the coconut milk and season with salt and pepper. Allow the soup to simmer on low heat for about 15-20 minutes, stirring occasionally.
Taste and adjust seasoning as needed. If you prefer a smoother soup, use an immersion blender to puree to your desired consistency.
Serve hot, garnished with fresh cilantro and lime wedges on the side for squeezing over the soup.
Notes
Serve in deep bowls, topped with a drizzle of coconut milk and fresh cilantro for garnish.