>>57846541>veganismYou will unironically have an easier time losing weight eating ground beef and sour cream than being vegan. 1 pound of 20% fat ground beef has about 80g of protein meaning you'll be eating enough to avoid serious muscle loss, and has about 1100 calories.
Add in some salsa and sour cream and you'll hit about 1200-1300 calories per day meaning you'll likely be in a 700-900 deficit, and it'll keep you insanely full if you have it as a late lunch.