Over medium-high heat, combine all the black bean tomato onion sauce ingredients in a saucepan. Mix occasionally and bring to a boil. Turn the heat down to low and let it simmer for 1 hour.
In a large bowl, combine the cheese, sour cream, soy milk and basil.
Preheat oven to 350 °F. Grease the baking dish using a cooking spray. Lightly coat the bottom of the baking dish with the sauce. Place one layer of lasagna strips lengthwise over the sauce and do not overlap the strips. Top with 1/3 of the herbed cheese mixture. Repeat sauce, lasagna strips, and cheese mixture until all lasagna strips are finished. Place the rest of sauce on top of the last layer of lasagna strips. Sprinkle ½ tbs parmesan cheese on the top layer. Cover with foil and bake for 1 hour.
Let the dish rest for 15 minutes before serving. Sprinkle the rest of parmesan cheese on top and garnish with green onions.
Black Bean Vegan Lasagna https://lightorangebean.com/black-bean-vegan-lasagna/