Using agave nectar as a sugar replacement is a great idea if you are sensitive to sugar or are a diabetic. Agave sugar is a low glycemic product and is great with recipes that call for sugar. The first thing you are going to want to do is pull out your recipe and get ready to add the agave nectar. When adding the agave nectar you should put 2/3 of a cup for every one cup of sugar that the recipe calls for. The only thing that you should remember is that you should always add the agave nectar with your wet ingredients and not your dry ones. Following these steps will have you on your way in no time.