In a large pot, heat olive oil over medium-high heat. Add carrots, celery and a pinch of sea salt; cook for three to five minutes, until softened slightly. Stir in veggie ground beef, Italian seasoning, onion powder, garlic powder, pepper and a pinch of red pepper flakes (if using); cook for two minutes, or until heated through.
Add marinara sauce, water and bouillon; bring to a boil. Reduce heat to medium and stir in the broken lasagna noodles, spinach and soy milk. Cover and simmer for five minutes, stirring frequently, or until the liquid has thickened slightly and the lasagna noodles are beginning to soften.
Stir in one cup of dairy-free mozzarella cheese and transfer the lasagna mixture to the casserole dish. Spread out the mixture in an even layer and top with the remaining two cups of dairy-free mozzarella cheese. Cover with foil.
Bake in the preheated oven for 15 minutes. Uncover and bake for another five to 10 minutes, until the cheese has melted, the sauce is bubbly and the lasagna noodles are tender.
Transfer to a wire rack and let stand for five minutes.
Serve garnished with fresh parsley and red pepper flakes (if using). Enjoy!