Ingredients
Equipment
Method
Bake the sheet cake
- Preheat the oven to 350°F and grease a 9x13 baking dish for easy release.
- Whisk together flour, granulated sugar, baking powder, and salt, then stir in whole milk, eggs, vanilla extract, and melted butter until just combined.
- Spread the batter into the prepared dish so it reaches the corners evenly.
- Beat softened butter, brown sugar, and cinnamon until fluffy.
- Drop spoonfuls of the cinnamon swirl over the batter and swirl into the top using a knife for marbled streaks.
- Bake for 30-35 minutes, until a toothpick comes out clean and the top turns golden.
Glaze while warm
- While the cake is still warm, beat the cream cheese glaze ingredients until smooth.
- Pour the glaze over the warm cake so it runs into the swirl crevices and forms a glossy layer.
- Let the glaze soak in for 5 minutes before serving warm.
Notes
For the darkest swirl, make sure the cinnamon-brown sugar mixture is fluffy before dolling on the batter, then swirl just enough to create streaks (not fully blend). Store covered in the refrigerator up to 4 days; warm slices in the microwave 15–20 seconds for best texture. Freezing is not recommended because the glaze can soften after thawing. For a lighter option, use low-fat cream cheese in the glaze and reduce milk by 1 tbsp if needed for a pourable consistency.
