This coffee cake with cinnamon sugar swirls and sweet vanilla icing is one delicious baked good, whether you enjoy it as a decadent breakfast or as a fun sweet treat!
Preheat oven to 375º Fahrenheit. In a large bowl, mix together the sugar, shortening, and egg. Continue until the mixture is light and creamy. Whisk in the milk.
In a separate bowl, whisk together the flour, baking powder, and salt. Add the dry ingredients to the wet ingredients. Set aside.
In a small bowl, mix together the cinnamon sugar swirl ingredients until well combined.
Take a greased 9x13 baking dish (*see note below) and add the coffee cake batter. Add blobs of the cinnamon sugar in random spots on top of the coffee cake batter. Use a knife to swirl around the topping until the batter is mostly covered. Do not mix the cinnamon sugar in fully. It should look like little swirls.
Bake in preheated oven for 20 minutes or until baked through and a toothpick comes out clean. The cinnamon sugar swirls might still look a bit gooey.
While the coffee cake is baking, make your frosting glaze. Add powdered sugar, milk, and vanilla to a small bowl and whisk until smooth. Add a bit more milk if the glaze seems a bit too thick for your liking.
Allow the coffee cake to cool slightly before adding your icing. Enjoy!
Notes
*You can bake this coffee cake in a 9 x 9" or 8 x 8" baking dish if you prefer or you can double the batter and cinnamon sugar ingredients to create a thicker coffee cake. The baking time will need to be increased slightly.To bake in a smaller dish: Add half of the batter to the bottom of a greased 9 x 9" or 8 x 8" baking dish. Swirl in half of the cinnamon sugar. Add the remaining coffee cake batter on top, then swirl in the rest of the cinnamon sugar. Also, cut the icing recipe in half. Bake for a few more additional minutes.