Make a list of the name and quantity of each ingredient that is called for in your recipe.
Refer to the nutrition label on each packaged food product. Write down the serving size and the nutritional information for an individual serving.
Multiply the nutritional values of the individual serving by the number of servings you will use in the recipe. For example, if your recipe calls for 2 cups of 1 percent milk, and a single cup of milk contains 110 calories, the total milk calories in your recipe will be 220 calories.
Locate an online or hard copy database of nutritional information. Enter the type and quantity of each bulk food item in your recipe and record the nutritional information. The USDA National Nutrient Database allows a search by product name, food group or individual nutrients.
Total the number of calories and nutrients for all of the items in your recipe. Calculate the values of an individual serving by dividing the total amount by the number of servings your recipe will provide