To preface, I kind of know the answer to this. I’ve put on weight before but I was hoping to get advice on how to go about better/more efficiently. I guess my question is really: what are healthy high calorie foods I can use to put on weight?

I’ve been underweight pretty much my entire life. I don’t think I have a chronic eating disorder, but there are times where I just don’t want to eat. I believe, however, that’s actually not my largest issue.

I’m potentially too health conscious. I’m vegetarian by accident (So I dated this girl right…) mostly, and as a result I eat a lot of nutrient-dense but calorically-low foods. I’m currently sitting just under 56kg (125 lbs) at 180cm (5’11ish). My plan currently is to just eat more often, and slowly ramp up how much I eat at each meal. About 6 years back I managed to hit 77kg by eating 4/5 large meals per day but then lost it all over the years by being sedentary and losing my appetite.