I tried a recipe where you substituted cooked cauliflower for mashed potatoes and it was wonderful. Now I substitute cauliflower in all my potato recipes. So I thought, why not see what other things I could substitute cauliflower for that would be as good. I now use cauliflower as a substitute for pasta, with a low fat pasta sauce it is every bit as good as spaghetti or macaroni. This saves hundreds of calories and is really good.
To substitute for mashed potatoes, just boil up a head of cauliflower, drain and mash. For a pasta substitute cook flowerettes, drain and use your favorite low fat sauces. Top with a bit of Parmesan.