When the kids were little, I used to make these at least once a month. Back then, we ate a lot of spaghetti and this was a fun way to change things around.
I'd give a list of ingredients, but really, it's whatever you want to put on them. As for specialized kitchen equipment, you'll need a large muffin tin, that's about it.
The first step, which is completely optional, is to line the tin with either Sopressata or Prosciutto.
The Sopressata fits better if you cut it like this.
Then you fill each tin with spaghetti (um, or linguine which is what I used) and cover with your toppings. I did some with pesto and some with pizza sauce.
And then topped them with fresh mozzarella, pepperoni and cooked mushrooms.
Pop them in a 350 degree oven until the cheese is melted.
I liked these because they're a good recipe to let little ones get used to the idea of making dinner for everyone. If you give them all the ingredients, they can do all of the assembly themselves.