I made a big mistake last night (what's new?) and I made the entire box of pasta instead of HALF the pasta as I wanted to for the pasta salad. Since I wanted to use the pasta right away I scrapped my plans for a chicken dinner and took the leftover rotini and made a spaghetti sauce. I used 1/2 chopped tomato, 1/2 chopped yellow pepper, 1/2 a chopped onion, 8 oz of sliced baby bella mushrooms, 2 links of turkey Italian sausage, and 1 small can of tomato sauce. I poured it over the lightly reheated pasta and topped it with mozzarella cheese.
To best reheat pasta, never store it with or in any sauce. You can sprinkle it with water and microwave until just steamy, or do what my old bosses at the Italian restaurant used to do, put the pasta in a large strainer or small colander and place the whole thing for just a minute into a pot of boiling water. When done, simply lift the strainer out and it is just like fresh!