Ingredients
Method
Preparation
- Preheat your oven to 350°F (175°C). Spray a 9x13 inch baking dish with baking spray or line it with parchment paper. Set aside.
- In a small bowl, stir together ½ cup granulated sugar and 1 ½ teaspoons ground cinnamon for the swirl mixture until well combined. Set aside.
- In a medium bowl, whisk together 4 cups all-purpose flour, 1 tablespoon baking powder, ½ teaspoon kosher salt, and ½ teaspoon cream of tartar until well blended.
Mixing
- In a stand mixer, or using a handheld mixer, cream together 1 cup unsalted butter and 2 cups granulated sugar on medium speed until light and fluffy, about 2-3 minutes.
- Add in the 4 large eggs, 1 cup whole milk, ¼ cup vegetable oil, and 2 teaspoons vanilla extract, mixing on low speed for about 1 minute until just combined. Don’t overmix!
- Gradually add the dry mixture to the wet ingredients, mixing on medium speed for about 30 seconds, until just incorporated.
Layering and Baking
- Pour half of the batter into the prepared pan, spreading it evenly. Sprinkle half of the cinnamon-sugar mixture over this layer. Add the remaining batter on top and gently spread it out. Finally, sprinkle the remaining cinnamon-sugar mixture over the top.
- In a small bowl, combine ⅓ cup light brown sugar, ¼ cup flour, and 1 teaspoon cinnamon. Toss in the cold, cubed butter and use your fingers, a fork, or a pastry cutter to create pea-sized crumbs. Sprinkle this evenly over the batter for a delicious, crunchy layer.
- Bake for 35-40 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. If the top is browning too quickly, loosely cover it with aluminum foil for the last 10 minutes of baking.
Cooling and Serving
- Allow the cake to cool in the pan for 10-15 minutes before glazing. In a small bowl, whisk together ½ cup confectioners' sugar and 2 tablespoons milk until smooth. Add more milk, a few drops at a time, if you want a thinner glaze. Drizzle the glaze over warm cake.
- Slice and enjoy warm or allow to cool to room temperature.
Notes
Ensure accurate measurements and check for doneness as baking times may vary. Store leftovers in an airtight container.
