Preheat oven to 350 and lightly oil a 9×11 baking dish.
Heat olive oil over medium heat. Add garlic and onion and saute for 5 min. or until onion is translucent. Add mushroom, bell pepper, spinach and olives. Sauté for about 5-7 min then add tomato sauce and ½ cup water. Add turmeric, paprika, chili powder, brown sugar, and taste to add salt as needed. Reduce heat to low, cover and simmer.
Place avocado flesh in blender or food processor along with lime juice, coconut milk, ½ cup water, cilantro and seasoning. Blend or process on low for about a minute.
Spread the cream sauce onto one side of each of the tortillas.
Now assemble the lasagna. Pour half of the filling mix in the bottom of the dish, top with 5 corn tortillas. Add the rest of the filling. Top with the 5 tortillas.
Cover with foil and bake for 25 minutes. Remove from oven and top with green onion and remaining cilantro for garnish.