Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 350°F (175°C) and line an 8x8 inch baking pan with parchment paper.
- In a large bowl, cream together softened unsalted butter, granulated sugar, and light brown sugar until smooth and fluffy.
- Beat in the egg and vanilla extract.
- In a separate bowl, whisk together flour, cream of tartar, salt, baking soda, and ground cinnamon.
- Gradually add the dry ingredients to the wet mixture, mixing just until combined.
- Transfer the cookie dough to the prepared baking pan, pressing it evenly into the bottom.
- In a small bowl, mix melted butter, brown sugar, flour, and ground cinnamon until a thick paste forms.
- Spoon the cinnamon filling over the pressed cookie dough and swirl it into the dough.
- Bake for 20-30 minutes, checking for doneness at 20 minutes.
- While baking, whisk together powdered sugar, vanilla extract, and heavy cream until smooth.
- Allow the bars to cool completely, then drizzle icing over the top and slice into squares.
Notes
For best results, ensure butter is softened and avoid overmixing the dough.
