I agree, Esofia. The bulk of our vitamins come from plant foods. I think the doctor mis-stated herself when she mentioned the vitamins. Doctors traditionally recommend B12 for vegans, though vegans as yourself that eat nutritional yeast don't even need to take B12. I really think the doc wasn't paying attention to what she was saying.
My GO-TO veggie meal is my vegetarian chili. It's only as good as I say it is if you use the same brands of ingredients, especially the seasoning, anything else will give a completely different flavor and I don't have a clue what it will taste like but it won't taste like mine
My Chili:
3 large sweet onions, chopped (I use Vidalia when available)
3 large red bell peppers, chopped (though I always use a large 28 oz can of roasted red bell peppers, chopped, and prefer Roland brand)
3 large cans (28 oz each) Muir Glen Fire Roasted Crushed Tomatoes (best flavor and consistency with nice pieces of tomato)
2 cans kidney beans
2 cans black beans
2 cans white cannellini beans
4 Tbsp
Smoky BBQ Rub from World Merchants Spice (key ingredient. Crucial ingredient. Seriously
)
Saute the onions and red peppers (if using fresh) in a little olive oil, stir in remaining ingredients. Add a little water or vegetable stock if it's too thick. Simmer in crock pot all day. Tastes best the next day IMO. Freezes really well in individual portions. I always have some of this in my freezer.