I have 3 other children and have always baked a lot for my family. Sometimes they don't have recipes.
Recipes are a combination of foods that have labels.
For instance, a cup of flour has 100 grams of carbohydrate in it or 6.5 carbs and a cup of sugar has 200 grams of carbohydrate in it or 13 carbs. When all the ingredients are listed with their amount and the number of carbohydrates, you total the amounts and divide the total by the number of servings the recipe yields in order to determine how to count the serving in your meal plan. This sounds confusing and it is somewhat. If you are working with a diabetes team or you have one in your area, ask the dietitian to help you with this. I am not aware of any printed material on recipe calculation.