Deliciously fluffy Cinnamon Coffee Cake layered with a cinnamon sugar mix and topped with a crumbly topping. This cake is perfect for any occasion and can be enjoyed warm or at room temperature, with or without vanilla glaze.
1: Preheat the oven to 350°F. Line an 8x8 inch baking dish and set aside.
2: In a large bowl, whisk together eggs, softened butter, granulated sugar, and brown sugar. Beat with an electric beater for 2-3 minutes until fluffy and pale in color.
3: Add vanilla bean paste, sour cream, and buttermilk. Add baking soda. Mix until just combined.
4: Add flour mixture and mix until just combined.
5: Prepare the cinnamon sugar layer by mixing together light brown sugar and cinnamon in a small bowl.
6: Assemble the cake by pouring half of the cake batter into the prepared baking dish. Sprinkle the cinnamon sugar layer evenly over the batter. Pour the remaining batter over the cinnamon sugar layer.
7: Prepare the crumb topping by mixing together flour, cornstarch, cinnamon, brown sugar, and granulated sugar in a bowl. Add melted butter and mix until crumbly.
8: Sprinkle the crumb topping evenly over the cake batter.
9: Bake for 50 minutes or until a toothpick inserted in the center comes out clean.
10: For the optional vanilla glaze, whisk together powdered sugar, vanilla extract, and salt in a bowl. Add milk gradually until the desired consistency is reached.
11: Drizzle the glaze over the cooled coffee cake. Enjoy your delicious Cinnamon Coffee Cake warm or at room temperature, with or without the vanilla glaze!
