Enter all the ingredients on a day with no other entries on the food diary. Print out the results which will give you a reminder of the individual components or take a note of the calories protein fat carbs etc.
Then enter as new custom food, give it a name plus whole recipe or single serve. I use whole recipe and then when entering in food log at a later date I give it a fraction depending on what serving size I end up using. Eg 1 of 5 is entered as .2 serving