Add olive oil to a large pot over medium heat.
Add red onion and a pinch of salt and sauté for 5 minutes, or until translucent. Add red curry paste, vegetable stock, and split peas. Cover pot and cook for 15 minutes.
Add crushed tomatoes and coconut milk and stir well, cover and cook for another 15-20 minutes, or until split peas are tender. Season with salt and pepper, to taste.
Serve soup garnished with fresh cilantro. Serve on top of rice, or simply scoop it up with garlic naan. Enjoy!