I must add, when my kids were young, and I was making three meals a day, this was often a lunch. Satisfying and fulfilling it can be made quickly for hungry mouths. We were always on the go, usually outdoors when my boys were little. Often, after a morning at the park, unwilling to leave, I had to come up with something quickly upon returning home to ensure peace was kept in the household. This was fast and effective.
1/2 box pound pasta
3 tab. butter or margarine
1/2 cup parmesan cheese
Boil pasta according to directions. Drain and save about a cup of pasta water. In a bowl, place pasta butter, salt, pepper, and cheese. Toss to ensure butter melts. Then using the reserved pasta add a bit of water, approximately 3 tablespoons at a time to thin the sauce a tad. This gives it a slightly creamy texture like the picture.