My guess would be that you were cooking sweet potatoes. Sweet potatoes are usually baked and eaten with brown sugar, cinnamon, butter. My favorite way to eat sweet potatoes is in a casserole. Some are sweeter than others. Sweet potatoes are frequently mistaken for yams. We grow lots of sweet potatoes in our garden each year and donate boxes to our church for our free Thanksgiving meal to those less fortunate. Volunteers pick up the potatoes, make a delicious casserole and we serve folks a free meal. Thanksgiving day we served 700 at our church plus Salvation Army delivered 300 plates. We've been doing this for 7 years and it gets bigger every year.