New vegetarian asking for help

Just gotta eat all the food. The only way to gain is to be in caloric surplus which might mean eating more calorie dense food... avocados, nuts and nut butters, etc.

As for quick and easy meals, there are a million. I just prefer to prep and bring a lunch... it takes some time to get used to the routine, but once it's established, you'd be amazed how quickly you can meal prep.

I started adding walnuts to my snack mix. I buy honey roasted chickpeas (130 cal), walnuts (200) and yogurt melts (50ish?). All together it's a lot of calories in 1/2 cup and easy to grab at work.

Been making a lot of salads and adding tofu (130 cal) and a half a cup of beans (100 calories) add a high fat dressing (100+ calories) some tomatoes and carrots and you're good to go.

Tortilla wraps are high calorie. I make BBQ chick pea wraps add some cheese, boom. Bean burritos are too. Or make potatoe and rice burritos.

I also like to make pasta and add in white beans to it with marinara sauce or basil pesto (high in fat and calorie).

Stir fries can be made high calorie too and are easy. You can use tofu or seitan for bulk.

I love black bean burgers with avocado on them! I don't do buns, but if you need extra calories, buns away.

Also can ranch style beans and vegan hotdogs to make chili cheese dogs (most of calories from beans and cheese, vegan hot dogs I get are only 50, different brands might be more though?)

Try some of these dishes found in the blog Jan 26th. http://blog.myfitnesspal.com/10-must-make-meatless-meals-under-375-calories/

There's this awesome guy on youtube (Brian Turner) who's a vegan bodybuilder. He's got a lot of great meal ideas on his channel along with full days of eating if you're interested