I am not vegan but one of my close friends is I am not sure how long you ate vegan but their is a lot of foods you can eat including tons of junk food.
Almost all candy is vegan
Many potato chips
I could go on and on but any eating plan has good and poor choices I eat mostly organic and whole foods and I still managed to put 30 of my 70lbs I lost back on. Trust me organic ice cream with pure dark chocolate is very tasty and calorie laden.
Enough nuts and avocado's with whole grain chips will take my total calorie allotment for the day.