A delicious cinnamon coffee cake featuring a buttery batter, a cinnamon-sugar filling, and a crumbly topping. This cake is perfect for any occasion, best served warm with a drizzle of icing.
Step 1: Preheat the oven to 350 degrees.
Step 2: In the bowl of a mixer, cream together the butter and sugar, scraping down the sides occasionally.
Step 3: Add the vanilla and egg, and mix in.
Step 4: In a separate bowl, mix together the flour, baking powder, and salt.
Step 5: Add one half of the flour mixture to the mixer, and when mostly combined, add the milk.
Step 6: Once the milk is mostly incorporated, add the rest of the flour.
Step 7: To make the filling: in a small bowl, pinch together the softened butter, flour, sugar, and cinnamon until soft crumbs form.
Step 8: To make the topping: add the butter, flour, brown sugar, and cinnamon to a food processor and pulse until coarse crumbs form.
Step 9: Grease a 9x9 baking pan.
Step 10: Pour in ½ of the cake batter and spread to all four corners.
Step 11: Sprinkle the filling over the top, then pour in the remaining cake batter and spread carefully across the top.
Step 12: Sprinkle the topping over the top and press lightly so it adheres.
Step 13: Bake for 45-50 minutes.
Step 14: Cool completely before adding the icing.
Step 15: To make the icing, add powdered sugar and 3 tablespoons of water to thin it out. Drizzle on top and enjoy!
