Pumpkin Harvest Bundt Cake is spiced with cinnamon, nutmeg and cloves, topped with a rich layer of butterscotch penuche frosting and crunchy toasted walnuts. This cake is full of fall flavors!
In large mixing bowl, combine the softened 1/2 cup unsalted butter and 2 cups granulated sugar. Add in 3 large eggs, one at a time, followed by the 15 oz. can pumpkin.
Sift or whisk all dry ingredients (2 3/4 cup all-purpose flour, 2 teaspoons baking soda, 1 1/2 teaspoons ground cinnamon, 1/2 teaspoon ground allspice, 1/4 teaspoon ground nutmeg, 1/2 teaspoon salt). Fold into wet ingredients, mixing until just combined.
Pour batter into well-greased Bundt cake pan. Bake at 350°F for 55-60 minutes, or until a toothpick inserted in the cake comes out clean. Cool cake 15-20 minutes in pan before inverting out onto a wire rack. Cool at least three hours before frosting. *See tips below on cooling cake
For the frosting
In small sauce pan, combine all ingredients except for the vanilla and powdered sugar (1 cup brown sugar, 1/2 cup granulated sugar, 1/3 cup heavy cream, 4 tablespoons unsalted butter, 1/4 teaspoon salt, 1 tablespoon white corn syrup).
Over medium heat, bring slowly to a full boil, whisking constantly.
When the mixture reaches a full boil, boil briskly 1 minute, whisking constantly.
Remove from heat and whisk in 1 teaspoon vanilla extract.
Allow to sit until cools slightly, about 20 minutes.
Then, whisk in 2 cups powdered sugar and beat until smooth. Frost cake immediately before frosting sets.
Notes
This cake is actually better if it is frosted one day after baking
Once the frosting comes to a full boil, stir it constantly to prevent it from burning
If the frosting becomes too thick, you can easily thin it out with a splash of heavy cream
Spread the frosting immediately after beating with the powdered sugar, or it will start to set
The cake will keep up to 72 hours. Store in an airtight container.