Ingredients
Method
Preparation
- Preheat your oven to 350 degrees Fahrenheit. Line a 9x13-inch baking pan with parchment paper, leaving a few inches of overhang on the long sides.
- Spray the parchment lightly with non-stick cooking spray.
Cinnamon Swirl Filling
- Melt 1/3 cup of butter and let it cool for 2 minutes. Combine the brown sugar, cinnamon, flour, and nutmeg with the melted butter and stir until you get a thick paste-like consistency.
- Set aside while you build the bar base.
Bar Base
- In a large bowl, whisk together the melted butter and granulated sugar until smooth.
- Whisk in the eggs and vanilla extract for about 60 seconds until slightly pale and thickened.
- Fold in the sour cream until smooth.
- Add the flour, baking powder, and salt. Fold until just combined.
Layer and Swirl
- Spread two-thirds of the batter into the prepared pan.
- Drop spoonfuls of the cinnamon filling across the batter, using a spoon to spread it gently.
- Top with the remaining batter in spoonfuls without trying to spread it perfectly.
- Use a butter knife to swirl through the layers.
Bake
- Bake for 28 to 32 minutes until the edges are golden and set, checking from 26 minutes.
- If the edges brown faster, tent with foil for the last 5 minutes.
Cool and Glaze
- Remove from the oven and let cool for at least 30 minutes.
- Beat the cream cheese until smooth, then mix in powdered sugar, vanilla, and a pinch of salt.
- Add milk until you reach the desired glaze consistency and pour over the cooled bars.
- Let set for 10 minutes before slicing.
Notes
Use room-temperature ingredients for a smoother batter. Do not overmix and ensure thorough cooling before slicing.
