Preheat the oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper.

In a large bowl, cream together 1 cup of butter and 1 cup of granulated sugar until light and fluffy.

Add 2 eggs, one at a time, and mix until fully incorporated.

Stir in 1 teaspoon of vanilla extract.

Gradually add 2 1/2 cups of all-purpose flour and 1 teaspoon of baking powder to the wet ingredients. Mix until just combined; don’t overmix.

In a small bowl, combine 3/4 cup of brown sugar and 2 tablespoons of ground cinnamon to prepare the filling.

Spread half of the dough into the prepared pan.

Sprinkle the cinnamon sugar mixture evenly over the dough.

Gently spread the remaining dough on top—it’s okay if it’s a bit uneven.

Bake for 25-30 minutes, or until the top is golden brown and a toothpick comes out clean.

Let the bars cool completely before glazing.

To make the glaze, beat together 4 ounces of cream cheese, 2 tablespoons of butter, 1 cup of powdered sugar, 1 teaspoon of vanilla extract, and 2 tablespoons of milk until smooth.

Spread the glaze generously over the cooled bars.

Slice and serve.