Heat the oil in a skillet over medium heat. Add the onion, garlic & bell pepper and cook for 2 minutes. Add the red curry paste and cook for another minute. Pour in the rice, lentils, coconut milk, broth & soy sauce and mix to combine. Bring to a boil, cover, lower the heat and simmer for 15 minutes.
Remove the lid, add the spinach, green onions, cilantro and lime juice. Cook for another 5 minutes, stirring frequently. Taste and adjust the seasonings as needed.
Serve hot with Thai basil and more lime wedges on the side.