I am starting to plan my summer camp lessons and want to incorporate two classes of cooking/food preperation. Has anyone done this before or do you have any good idea? I was thinking aof maybe making smoothies for one of them. Thanks.

I've done ice cream.  The kids love it.

Also - no-bake cookies, sandwiches, spaghetti.  I've been thinking about bread pizza.  Basically Toast some white bread.  Spread some pasta sauce on it, sprinkle some cheese, and whatever toppings.

A "Shrek Smoothie"/ "Swamp Smoothie" and the movie Shrek could be interesting.

I've made no bake cookies in 2 camps and they went over well (high school and elementary school).

I also did a taste test in my regular classes when reviewing different tastes which the students really liked. We talked about the different tastes and then they received 10 small cups with "mystery" food and had to try it and determine the different tastes.

I've also made guacamole, salsa, mini pizzas (with English muffins), frittata, soda bread, peanut butter blossom cookies and spring rolls with different after school classes. The students really enjoyed the frittata and soda bread but the guacamole didn't go over so well.

If you don't have access to a kitchen - no bake cookies just need a pan and portable burner or you could do spring rolls which wouldn't need anything but the supplies (if you include noodles you'd have to cook those at home and bring them in).

That thread is great to sift through - but if you're looking for some fast ideas, here are some easy things that they can use in the future:

Deviled Eggs - Might require you to boil the eggs before hand, otherwise, pretty easy.

Chocolate Truffles - You'll need some time for the chocolates to cool, but while they cool, you can do a companion lesson about Valentine's day  or Gift Exchanging or you can make oragami boxes

Ice Cream - so easy! So good! - I've done it with 2 plastic bags, some rocksalt, and flavored milk. not a bad pick at all

Tuna salad sandwiches - easy, healthy, requires no heat

I did some cooking last year with 3rd-6th grade. The things that worked best were making ice cream and sandwiches on a stick. I'll attach a ppt for both.
For the sandwiches, just get some of the long toothpick-like sticks (like for odeng) and cut all your ingredients in small cubes or halves, like cherry tomatoes, cheese, ham, cucumbers, etc. Set the ingredients out on a table and the students can put the ingredients of their liking on the sticks.

We have a big toaster over so I actually baked cookies, but that didn't work as well. I somehow saved it from being a big disaster, but if I ever do it again I will premix the batter instead of having the students do it.

This year my coteacher said no food because it's too much trouble. They have to put in a special request online listing each ingredient and the exact price, and then order it all online. It's a shame they can't just provide a discretionary budget. The kids really like making food.