I called them once to ask if the original Biquick and the new Heart Smart Biquick are interchangeable in recipes and they told me NO, they are not. In some recipes it may work out but for the most part they are not. They then sent me a whole bunch of recipes just for the Heart Smart Bisquick in the mail, not on the internet. Don't be afraid to call them if you have questions. My favorite in the Cheddar Bay Biscuits. I add garlic and cheese to the dough and garlic to the butter to brush over the top. MMmmm, can't wait for supper tonight.