One of my favorite quick meals that I eat for most my lunches is a bowl of mixed veggies, I use a whole small bag of frozen veggies of my choice, right now that's a mix of pea pods, broccoli, water chestnuts and carrots and I add cashews with either tofu chunks, tempeh, or seasoned seitan, squeeze some lemon and Braggs Aminos and it's simple, easy and filling!
You can add vegan butter or vegan gravy, or vegan cheese to give it a totally different flavor.
It's not high calorie or high carb and very healthy.