Ingredients
Method
Step-by-Step
- Heat the oven to 350°F (175°C) and grease a 9 x 13-inch baking dish. Whisk the flour, granulated sugar, baking powder, and salt together in a large bowl.
- Add the milk, eggs, vanilla extract, and melted butter to the dry ingredients. Stir just until a smooth batter forms, taking care not to overmix.
- Spread the batter evenly in the prepared baking dish. In a separate bowl, mix the softened butter, brown sugar, flour, and cinnamon until well combined.
- Drop spoonfuls of the cinnamon mixture over the batter. Run a knife through the topping and batter in gentle swirling motions to create a marbled cinnamon-roll pattern.
- Bake for 25 to 30 minutes, beginning to check at about 25 minutes. The center should be set, and a toothpick inserted into the cake portion should come out mostly clean.
- Whisk the powdered sugar, milk, and vanilla into a smooth glaze. Cool the cake for 10 to 15 minutes, drizzle the glaze over the warm cake, and cut into squares.
Notes
Use softened rather than melted butter for the cinnamon topping so it remains in distinct swirls. Do not overbake, since the cake should stay soft and moist. For cleaner slices, cool for 10 to 15 minutes before glazing and cutting.
