"This popular pick from Boston Market may be called a side dish, but it tastes more like dessert. With the brown sugar, cinnamon, and butter in there, and the oatmeal streusel on top, you will be reminded of sweet potato pie; yet the dish goes great alongside meals as varied as low-key chicken dinners or bigger-key holiday banquets. And the great part is, if you're planning to use this for entertaining, you can make everything but the streusel a day ahead so you won't be stressed at crunch time. Just cover the filled baking dish and pop it in the fridge. Take it out a few hours before you plan to bake it so the casserole can come close to room temperature, then you simply top it off with your streusel and pop the whole thing in the oven. Source: "Top Secret Recipes Unlocked" by Todd Wilbur...."