One of my favourite things to make for myself that lasts two or three days is chicken tacos! They're messy but healthy because of how many vegetables you can use. I use boneless, skinless chicken breasts (I don't eat red meat but chicken is healthier anyway so it's a good choice), cut that up into small bite size pieces, cook it in a wok, add some Old El Paso Taco Seasoning, cut up lettuce, tomatoes... Low Fat or Non-Fat sour cream and grated cheese and voila! You've got your protein, your veggies, your 'bread' (the tacos)... and it's pretty damn healthy because nothing is fried.
You can also use hard tacos, soft tacos (fajitas) or a mix of both!
I also agree about the George Foreman grill... OMG. It's my baby. I make panini sandwiches weekly. So freaking yummy! Kabobs are also cool and can be made on the grill because you can get your protein and veggies in one.
As a side you can make some rice and even 'de-bob' your kabobs and mix the meat and veggies into the rice.
Fruit salad is healthy and it will last a few days for dessert.
This is a good way to get your daily fruit intake.
I also like to make vegetarian chili because you can put it in plastic tubs and freeze single-sized portions.
Never turn your nose up at frozen veggies either! They're a quick way to get in this important food group and frozen veggies are actually better for you than fresh ones--they seal in the nutrients when they're frozen! I love Green Giant's broccoli with cheese sauce.
Pizza! No, not the ordered kind.
By making your own pizza, you can choose healthier toppings and portion-control. Cheese is good but it's really fattening, so you can buy low-fat cheese and use that on your own pizza instead! You can use bits of chicken breast instead of fattening meats like pepperoni. And throw on as many veggies as you want. It's always good when you know what's going into your food, and what better way to know than to make it yourself?!
You can usually buy ready-made dough these days, including whole wheat. Personally, I don't mind pizza the next day (but I know a lot of people do), reheating it in the oven, so I'd make a larger pizza and have it again the next afternoon/evening too.
Soup! Even if you can't cook, anyone can make soup. Throw in whatever you want. You can use a ready-made broth from the grocery store. You can add meat or make it vegetarian. The best part about soup is that you can't ruin it and you can add anything your heart desires. You can also make huge batches and freeze it without hassle. And if you hate vegetables, soup is a fabulous way to sneak them into your diet.
The main 'law' of cooking for one is large portions and then being able to freeze the rest for later! It's smart and will save you money AND time.
You only have to spend a lot of time on these things once and then you're set for days, or in the case of freezing, weeks or months. I like freezing a bunch of different meals because I get tired of the same thing after two or three days and then need a break.
Hope some of these tips help! I'm a huge cooking/baking enthusiast so I've spent a long time trying to solve the very question you've asked. It's hard to eat healthy when you don't have a ton of time, and it gets boring eating the same things over and over--so it's all about finding that balance.
