preheat the oven to 400 degrees. bake the sweet potato cubes on a baking tray for 30 minutes until tender. i did not use cooking oil to coat them.
add the sweet potatoes to a blender when they're done along with the vegetable broth, cream cheese, nutritional yeast and seasonings.
blend until a thick consistency forms.
in a large pot or pan, sauté the onions and spinach in extra virgin olive oil for 8-9 minutes on medium high heat and stir often to avoid sticking to the pan.
next, add the sweet potato mixture from the blender to the pot or pan and stir well. turn the heat down to medium low and cook another 25 minutes.