if it is something you make regularly, use sparkrecipes.com
[you can also find the link under the articles and videos tab] to enter the recipe.
if you make things differently every time, enter what you use.
so if you use a teaspoon of olive oil, you search olive oil, select teaspoon and enter it. if you use a Tablespoon, same thing with a Tablespoon.
if you added a half cup of chopped zucchini, you'd enter half cup of chopped zucchini.
if you added a teaspoon of rosemary, you'd enter a teaspoon of rosemary.
if you only ate half of what you made, you'd enter in half the amount you used. if you only ate 1/3 of it, you'd enter a third of what you made.