Preheat the oven to 175 C/346 F.
Line a baking sheet with parchment paper.
In the food processor add the walnuts and pulse to obtain a crumble.
Add the rest of the ingredients and pulse four or five times to obtain a mixture with some crumbles for texture (don't over-process to avoid a mushy mixture).
Shape the mixture into little balls using your hands or a scoop and line them onto the baking sheet. You will get 10 - 12 balls.
Drizzle with coconut oil and bake for 30 minutes.
While the balls are baking prepare the tomato sauce.
Add the onion and butternut cubes into a large cast iron skillet together with a tablespoon water and cook over medium heat for 3-4 minutes.
Add the tomato sauce, broth/water, coconut milk, spices and sugar, mix and bring to boil over medium heat.
Simmer for 10 minutes, season with salt and pepper and use a hand blender to turn the sauce into a creamy liquid.
Remove the lentil balls from the oven and add them one by one into the sauce pan.
Garnish with coconut milk and fresh parsley and serve with brown rice and lime wedges.