A great trick is to hide it at first. Try blending them and then adding them to foods your kid eats as an example from your question chicken strips, make a dipping sauce with blended vegetables inside. Another option is too make meal time a game. I actually wrote an entire article on this subject. It would be illegal for me to copy paste because I gave associated content full rights but if you'd like to read it can be found at the link in source, it also links to a second article just about extra fun education meal ideas.

Good Luck.

You could disguise some vegetables in a home-made pizza.

You can also purchase vegetables which are in a nugget-like potato mix. Add some in with his usual nuggets and see if he notices the difference. If they are smothered with tomato sauce he probably won't even know.

Kids have an unevolved palate and it's not until the later years they develop a more advanced palate which lets them enjoy a wider range of tastes.

I wouldn't force anything on them as it can end in a fight or resentment.

Feed him fresh vegetables with a really good dip.

You could try offering him a reward such as dessert for eating vegetables.

Also feed him things that he is willing to eat that are as nutritious as possible such as perhaps whole grain bread and pasta, natural peanut butter and whole fruit jelly for PB&J. Things like that. And make sure you are giving him a daily vitamin.

You can purée some vegetables into his food.

I used to be that way, and the trick was to mash the vegetables up, and put them in a pie shell, and layer it all with a thick slab of melted mazerella and cheddar cheeze at least 1 cm thick and bake it... mmm...

At least... that's what I tried to tell my parents would work, but you wanna talk about pickiness... they were *so* stubborn, and would just stand there with their arms folded and not budge an inch until I ate the veggies as served.

This one is fun for both of you and I used to do this for my kids even though they are not fussy.

We called them color nights.
Color night means you have to cook a dinner of food of mostly one color and he has to try each thing on the plate.
The game part is helping finding things that are that color in the supermarket or at the grocer, being inventive and trying really hard to think of things to use and colors that work.

Some like red aren't too hard - hot dog, tomato sauce, tomato, capsicum, radish, spaghetti with a tomato base, prawns, even add a bit of red natural food coloring to pasta or something. Green - easy :) lots of things you can use naturally and then you can color stuff again if you like - ha green rice ! Then there's yellow and purple ( eggplant, purple cabbage, prunes hehehe ) You get the idea.

To help you Google does a wonderful thing - you can search for images based on colour. I'll include a few searches I do to get you started :)

picture by mrtruffle @ flickr

Sneak the veggies into the foods he likes!

Make your own pizza.
Slice veggies ultra thin and they will barely be noticed.
Just layer the thinly sliced veggies underneath
the cheese and pepperoni.
In between, the sauce and cheese.

Take those chicken strips and wrap them in tortillas with
thin sliced tomato, lettuce, cheese, spinach.

Soups, and chili are great way to add vegetables as long as they are finely chopped.

Meatloaf is a great dish that you can add finely chopped carrots, eggplant, celery, spinach, broccoli and wont get noticed with a good gravy and glaze.

I also suggest, having dinners where this a buffet of different vegetables cooked different ways. No chicken strips or pizza that night.
Just a wide selection that he can choose and eat.

Plus, make sure the whole family, including you! Is modeling the enjoyment
of eating vegetables.

The previous answers all give good tips for sneaking veggies into your son's diet, so I would like to take a different approach.

When I became the stepmother of three young children (plus one of my own) they tried to convince me they didn't like this dish or that, so I told them this was their option: They could eat what I had prepared for supper or they could have a peanut butter sandwich; I wasn't running a short-order restaurant. I tried to allow for individual tastes, because even most adults have certain dislikes, and have at least one dish I knew they would eat at each meal. I don't recall any of them ever opting for the peanut butter, and they began to sample foods they told me they didn't like. It turned out that none of them were as picky as they tried to convince me they were, and began to eat foods that they never would for their own mom!

I never forced any of them to eat something they didn't want, or scold them for not cleaning their plates, but gave them the choice. Once or twice a week we would have "buffet night" where they were free to pick from the leftovers or to open a can of canned pasta or whatever they wanted that didn't require any more cooking than a microwave. Those nights were popular, and we never had any fights over food the rest of the week, either.

Do more with them.

I am blessed with a little girl who will try anything to see if she likes it. And often enough, she does. But I also have many nieces and nephews. Hiding the vegetables never worked well, and only ended in the entire plate being refused. We've tried the "They'll get hungry sometime" idea. That just gets your fridge full of leftovers. But if you save them in the freezer instead, you can make soup the kid won't eat at the end of thee week.

When planning meals for Sundays, when the whole family gets together, we have to keep everybody's likes and dislikes in mind. With five kids between 1 year and 12 years, and five fairly picky adults at the table, it can be rough. Picky adults can just reinforce the children's pickiness. So we have gotten some tricks together for this.

Cook vegetables you enjoy. Kids can spot that fake "MMMmmMMM" face a mile away. Quit lying to yourself, if it doesn't fool you, it will not fool them. So make things you enjoy. Don't be afraid to give them the same vegetables every few days. It may seem pointless, but kids tastes and reasons for pickiness can change rather suddenly. Make sure they understand that it is OK not to like something. Ever since childhood, I have hated the flavor and texture, both cooked and raw, of bell peppers. I will not eat them. But my daughter does, and she understands that Daddy does not like them. Though, she does make me try them again from time to time.

Oh, and give them the same kind of attention you do the rest of the meal. Microwaved green beans are unappetizing. They smell green. They look green. And that's about it. Look up some side dish ideas that use the vegetable you have in mind and do that instead. I know, the microwave is quicker. But you are using the stove anyway, so it won't actually take any longer to finish cooking, and the kids are more likely to eat things that actually taste good.

here are a few things that worked for me.

Spaghetti was one of the first things I did with a twist. Instead of pasta, I used spaghetti squash. Once it is cooked and you use the fork to separate the inside, it looks like pasta. I seasoned it with a little salt and garlic. The sauce that I cooked to put over it was just regular spaghetti sauce. Whenever I made this, my kids didn't even know they were eating squash. The secret is to make the rest of the meal more interesting. I would make really good meatballs to put in the sauce and bake real garlic bread sticks and grate colby cheese. My kids always loved my spaghetti and after many years has only just found out there was no pasta.

Tuna helper was another thing that hooked them. The tuna helper with the broccoli in it. The broccoli is so small that you can hardly see it but when I informed them that they had eaten broccoli they were impressed that they liked it. So the next step was to fix it a different way-in cheese sauce. One likes it and the other prefers not to have the cheese. Either way it was a success.

I have a new spin on the pizza idea. Pizza rolls. These are very simple to make and they will be begging for more. This is my own recipe and this will be the first time I give it out to anyone.
Get some wonton wrappers. You will find them in the vegetable section of the grocery store. you will need turkey pepperoni (you can use regular but I find that the regular lets go of alot of oil in the cooking process), green onion, diced ham, breakfast sausage like jimmie dean, olives, 1 carrot, broccoli, bell pepper, and anything else you can think of that you like on your pizza and a jar of spaghetti sauce. When choosing which vegetables to hide dont use vegies with large seeds like squash cucumber.
And one more thing you will need is cheese alot of shredded cheese.

In a large mixing bowl you will put in all of your ingredients. Make sure that you cook and drain the sausage before adding it to the mixture make sure to chop everything. Use a grater to grate the carrot and only use the floret blossoms of the broccoli. You don't want big chunks of anything. Mix it all together and then add as much cheese as you want. I like to use alot so that it really has a presence in the pizza roll. Once it is mixed, start putting the sauce in the bowl a little at a time. You only want enough sauce to make it tacky and bind to all of the ingredients.

Now you will take your eggroll wrap, place it infront of you so that it is in the shape of a diamond. Eyeball the middle line (horizontal) and place a spoonful of the mixture on the lower half of your diamond staying away from all the sides. Now roll it up by taking the bottom corner and putting it over your mixture and then enveloping the mixture in by folding in the sides then continue to roll until done. Put a little water on your finger and put it on the north corner and it will 'glue' the corner down for you.

The only thing left to do now is drop your pizza roll in hot oil until brown. It only takes a minute for it to cook. Place it on a metal rack to cool .

Your kids will love these and all they will taste is pizza. Don't use too many vegies, you dont want to take the pizza taste away.

I love veggie pizzas. Maybe try to make your own at home with your son and let him pick some of the things that go on it.

My daughter likes veggies with ranch dressing. She also likes cheese. Actually, cheese makes everything better, right? She doesn't care for salads yet but I do make sure she has at least a couple bites of it everytime we have one.

If he absolutely will not eat veggies, why not fruit instead? As a general rule, I let my daughter eat almost anything she wants that's good for her. Which means as many cheese sticks as she wants (she loves string cheese) as much fruit and as much vegetables. Kids also like dried fruit (raisins and cranberries) and cracker combinations with meat and cheese. Make it a rule that he only has to eat so much of the vegetables if he eats something else that's good for him and supplement the rest with other things.

Some people just don't like veggies even as adults. Just find other ways for him to get the nutrients he needs.

Try getting Pizza that have vegetables in them or make some homemade chicken strips and hide some vegetables in the chicken. Their is also a lot of other healthier foods out their that your son may like.

Put some tomato or alfredo sauce on them and then sprinkle with cheese.