In a medium bowl, cream together the butter and brown sugar until creamy and homogenous. Add the eggs, vanilla extract, ground cinnamon, nutmeg, cloves, ginger, and salt to the creamed butter and sugar. Stir in evaporated milk, then pour the mixture into the riced sweet potatoes in the large bowl. Whisk together or stir with rubber baking spatula until well incorporated and creamy.
1 stick unsalted butter, 1 cup light brown sugar, 2 large eggs, 1 tablespoon vanilla extract, 2 teaspoon ground cinnamon, 1 teaspoon ground ginger, ¼ teaspoon ground nutmeg, ½ teaspoon ground cloves, ½ teaspoon kosher salt, ¾ cup evaporated milk