Glazed Sweet Potatoes

• 4-5 pounds sweet potatoes, peeled (about 5 large)
• 4 tablespoons (1/2 stick) margarine
• 1 cup brown sugar
• 1 tablespoon vanilla
• 1/4 teaspoon salt
• 1/4 cup whiskey or bourbon, such as Jack Daniels

Preheat oven to 375 degrees. Cut the sweet potatoes into 1⁄2-inch slices. Steam the sweet potatoes for 10 minutes or until soft but not mushy. Remove potatoes from the steamer and set aside. In a small saucepan, melt the margarine over medium heat. Add the brown sugar, vanilla, and salt, stirring until the sugar is dissolved. Stir in the whiskey or bourbon and cook for 5-10 minutes or until slightly thickened, stirring occasionally. Spray a large 9- by 13-inch glass baking dish with nonstick cooking spray. Place the sweet potatoes in the pan and drizzle the sauce over the top. Bake uncovered for 1 hour. Baste with the sauce every 10 minutes to keep the potatoes from drying out.