Most hummus has added fat, often a great deal of fat, which will probably put most ready-to-eat varieties of hummus off-plan. If you're allowed additional fat, you may be able to fit it in (I'm not as familiar with HMR as I am with other meal replacement plans ( I'm on Dr. Anderson's Simple Diet currently).
If beans are allowed, you should be able to make your own hummus and other bean purees, as long as you use only legal ingredients. Basically, you mash or blend a can of drained chickpeas, or beans of any kind, even baked, pork n' beans, or refried beans (as long as all of the ingredients are plan-legal) with any seasonings, veggies or herbs you'd like such as onion, garlic, bell pepper, parsley, celery, cilantro, diced tomatoes, green chiles... (the possible combinations are endless) and then mash or puree until it's the consistency you like. A food processor or blender works best if you want a smooth consistency.
Just last week, I added a can of low-fat refried beans to a saucepan and whisked in a can of diced tomatoes with green chilies. No ther seasonings were needed.
It made a great taco salad topping.
If beans or any legal ingredient you want to add aren't unlimited on your plan, you'll need to measure before pureeing or mashing and will have to calculate serving size accordingly.