Stuffing

Eat hamburgers, french fries and any pork products such as lard, pork chops, bacon etc. eat that for two months in a row and you will see the results.

Cheapest and easiest way would be making a cake mix gainer shake every night before bed. It's cake mix, ice cream, milk and anything you'd like to add such as chocolate syrup or fruits. It's a great way to add thousands of calories!

Also drinking heavy cream through out the day will also add tons of pounds

My favourite way to gain is just by eating the things I already love eating but finding ways to add more calories to them. You’re more likely to want to keep eating if you’re eating stuff you enjoy! I do things like adding cream and peanut butter to my usual shakes, adding spray cream to desserts, using cream wherever I can (wow, guess I really like cream!), adding extra cheese to pizza, cooking with butter, and choosing the brand of a product that has the most calories. You can easily pack a LOT of calories into shakes and smoothies. Also if I have cream in the fridge, I can never resist having a few sips every time I open the fridge lol. Good luck!