01 -
Preheat your oven to 350°F (175°C). Grease a baking pan to prevent sticking.
02 -
In a mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
03 -
Beat in the egg and vanilla extract until well combined.
04 -
Gradually add the all-purpose flour to the mixture. Stir until just combined to avoid overmixing.
05 -
In a small bowl, mix the ground cinnamon with two tablespoons of sugar. Set aside the mixture.
06 -
Pour the batter into the greased baking pan, spreading it evenly.
07 -
Sprinkle the cinnamon and sugar mixture evenly over the batter and use a knife to create swirls.
08 -
Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
09 -
Allow the bars to cool. Mix powdered sugar and milk to create a glaze, then drizzle it over the cooled bars.