I found a few themes in this thread common to what I have found to be helpful if you are a female vegetarian who is trying to add muscle--an almost impossible task! (I'm working on that very same task, yet I also eat fish so it may be slightly easier in my case.)

First, the suggestion for Greek yogurt is excellent. Not only is it a more protein-dense product than typical American-style yogurts, Greek yogurts also have a whole lot less 'mystery' ingredients. My favorite brand is Chobani--very good stuff.

Second, adding protein powder to your granola (or even your oatmeal) is really great. I take this one step further and make my own home baked granola and include the protein powder in the ingredients so it's baked right into the mix. This way I can control the sugars and fats too. A lot of granolas have tons of sugars--not good if you need to get more calories from protein sources.

Finally, adding a few supplements has been really noticeable for me. I take Flora Vital (a liquid iron supplement with added vitamin B's--made from "flowers"). I really notice a boost in energy. I also cycle other supplements like creatine for muscle gain and HMB to prevent muscle loss. I find these very effective and I haven't experienced the negative side effects that others claim (some people report bloating with creatine--there haven't been any negative side effects in studies of HMB). When I start the creatine cycle I never do the loading phase--I just take the maintenance dose and I break it up between 2 to 3 times per day. And, I always take the creatine with a simple sugar--but never with any other supplements. Men who work on endurance training may not see any benefit from creatine, but women athletes can perform year-round strength training without any detriment--we just don't bulk up.

Recently, I did read a single, non-peer reviewed, study indicating that women who work on building up leg muscle mass in addition to regular competitive cycling training don't actually see an improvement in cycling performance--their performance is the same as women in a competitive cycling-only training group. But, the flip side is, it won't hurt! Performance results were the exact same for both groups. And it'll definitely help down the road when we're old and frail and don't want to have to fear breaking a hip :)