Splurge and enjoy this decadent side dish for the holidays or a special occasion. This is a nice change from the usual sweet potato casserole. The peaches compliment the sweet potatoes, and a little peach schnapps liqueur adds to the flavor. You don't have to be concerned about the alcohol content of the schnapps as the alcohol evaporates during the cooking process, but you can substitute the schnapps with peach nectar if you prefer. You can find peach nectar in the juice section of your grocery store.