In a large pot, bring water to a boil. Add bouillon cube and stir until dissolved. Add onion and place lid on pot, then reduce to a simmer. Simmer approximately 10 minutes or until onions are translucent, stirring ocassionally.
In a blender, place cashews, sesame seeds, pine nuts, lemon juice, apple cider vinegar, half of almond milk, sea salt, mustard, cornstarch, paprika, turmeric, and nutritional yeast. Blend until consistency is very smooth, adding remaining almond milk as you blend. This is the faux cheese sauce.
Add faux cheese sauce, faux meat crumbles, tomatoes, and lettuce to pot and stir to combine. Simmer with lid on until heated through (approximately 10 minutes), stirring ocassionally. Adjust to desired consistency with water or almond milk.