In a small food processor, add red pepper flakes, smoked paprika, cumin, coriander, garam marsala, and salt and pulse. Give a couple pulse to incorporate. Next, add avocado oil, tomato paste, and cilantro leaves. Pulse until paste forms and everything is well incorporated. Set aside.
Heat a skillet over medium heat. Melt coconut oil and add diced onion, cooking until translucent, 4-5 minutes. Add in minced garlic and cook for one more minute.
Stir in masala paste and cook for 1-2 minutes, then stir in stewed tomatoes and coconut milk. Stir together and bring to a boil.
Add in lentils and reduce heat to medium low. Cook, stirring often, until lentils are tender, 20-25 minutes. Finish by folding in the spinach.
