4-5 tablespoons heavy cream (or more to get the consistency you’d like)
walnuts for topping optional
Preheat oven to 350 degrees Fahrenheit. Grease a 12 cup bundt pan with shortening, then dust with flour. Or you can use Baker’s Joy spray.
In a large mixing bowl, mash sweet potatoes in 2 tablespoons of liquid.
Add sugar, milk, oil, and eggs to mashed sweet potatoes and mix well.
Add flour, baking soda, salt, nutmeg, cinnamon and allspice, and baking powder. Mix well.
Pour evenly into the prepared bundt pan. Bake for about 1 hour. The exact time will depend on the type of pan you have. Test the cake with a toothpick or an internal thermometer. The cake should be about 200º Fahrenheit.
Cool for 15 minutes in the pan. Turn out onto a wire rack to cool completely.
To make the icing, combine the powdered sugar and cinnamon in a small bowl. Add 3 tablespoons of heavy cream. Mix until it is smooth. Add more heavy cream, one tablespoon at a time, until the glaze is thin enough to spread or drizzle.
Drizzle the cinnamon icing on the bundt cake. Sprinkle with walnuts if you’d like.
Store in an airtight container at room temperature.