I eat the same thing for breakfast every day. I have three different cereals that I like but I'll buy the same one for literally months at a time. On Fridays I switch it up and have oatmeal (but I'm even consistent about that--only on Fridays and pretty much every Friday). On weekends I go crazy and have bacon, an English muffin, and fruit. Again, same thing every weekend (except I've been thinking about replacing the bacon with grits on Sundays). Yep, I'm a wild woman!
For lunch, I mix things up a bit but I almost always have a cucumber, tomato, and raspberry salad with whatever else I'm having. For a long time, I had a PB&J every day (and you pretty much can't get a faster lunch than that).
I always have the same green salad with my dinner but I do make a lot of different entres.
I eat the same snacks every day. In the AM it's coffee or tea and sometimes some fruit. In the afternoon it's a fiber cake from Trader Joe's and after working out (usually late afternoon), it's a bowl of NF yogurt with raspberries. I finish every day with a cup of tea and sometimes a low cal pudding cup before going to bed.
One thing that helps me is making meals that last for multiple days. I'll frequently make something for lunch that will last three or four days. And anything I make for dinner absolutely has to feed us for two days. I have some recipes that feed us for three or four days (after the second or third day I usually freeze the rest in individual servings because my SO requires more variety in his diet). This gives me some quick meals that I can pull out of the freezer.
If you live near a Trader Joe's, they are a great source of low calorie, easy and quick to prepare foods. Some of the staples I rely on for quick meals include their frozen brown rice, pre-made Indian dishes, frozen salmon patties, Gerhardt's turkey sausage, pre-cut and washed veggies, and their pre-made salads. I don't get it from Trader Joe's, but pre-seasoned pork tenderloin is another super easy, low calorie meal. Just take it out of the package and stick it in the oven.