This is a moist bundt-style cake flavored with vanilla, cinnamon, and brown sugar, layered with a nutty streusel filling and topped with a sweet glaze (optional). The sour cream adds richness and ensures a soft, tender crumb, making this cake incredibly satisfying without being overly sweet.
12 tablespoons (1 ½ sticks) unsalted butter, room temperature
1 ½ cups granulated sugar
3 extra-large eggs, room temperature
1 ½ teaspoons pure vanilla extract
1 ¼ cups sour cream
2 ½ cups all-purpose flour
2 teaspoons baking powder
½ teaspoon baking soda
½ teaspoon kosher salt
¼ cup light brown sugar, packed
½ cup chopped pecans or walnuts
1 ½ teaspoons ground cinnamon
½ cup powdered sugar
1–2 tablespoons milk or cream
¼ teaspoon vanilla extract
Preheat oven to 350°F (175°C).
Grease and flour a 10-inch bundt pan or tube pan thoroughly.
In a large bowl or stand mixer, cream the butter and granulated sugar for 3-5 minutes, until light and fluffy.
Add eggs one at a time, mixing after each addition.
Mix in the vanilla extract.
In a separate bowl, sift together flour, baking powder, baking soda, and salt.
Add the dry ingredients to the butter mixture alternately with the sour cream, beginning and ending with the dry ingredients. Do not overmix.
In a small bowl, combine brown sugar, cinnamon, and chopped nuts.
Spoon half of the batter into the prepared pan and spread evenly.
Sprinkle all of the streusel filling evenly over the batter.
Top with the remaining batter, spreading gently to cover the filling.
Bake for 50–60 minutes, or until a toothpick inserted in the center comes out clean.
Cool in the pan for 10-15 minutes, then carefully turn out onto a wire rack to cool completely.
In a small bowl, whisk together powdered sugar, vanilla, and milk until smooth.
Drizzle over the cooled cake before serving.