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Snickerdoodle Cookie Bars
These snickerdoodle cookie bars have all of the best qualities of classic snickerdoodles, but are baked up into thick and soft bars! With a combination of cream of tartar, cornstarch, and baking powder, these cookie bars yield that signature fluffy snickerdoodle texture. They are topped with a generous sprinkling of cinnamon sugar! So these cookie bars really do check all of the boxes - thick, soft, fluffy, and minimal effort.

Ingredients
Cookie Dough
Cinnamon Sugar Topping
Instructions
- Step 1
Preheat the oven to 350 degrees F.
- Step 2
Line a 9-inch square pan with parchment paper.
- Step 3
In a medium bowl, combine together the flour, cream of tartar, cornstarch, baking powder, and salt. Set aside.
- Step 4
In a large bowl, add the butter and sugar and use an electric hand mixer to cream for 2-3 minutes until light & fluffy. Add the oil, egg, egg yolk, and vanilla and mix until fully combined.
- Step 5
Lastly, add the dry ingredients and mix on low speed until just combined.
- Step 6
Transfer the dough to the prepared pan and use plastic wrap to press the dough out into an even layer. Place in the fridge to chill for 30 minutes.
- Step 7
Make the topping by combining the sugar and cinnamon in a small bowl.
- Step 8
Remove the plastic wrap from the dough, and sprinkle the cinnamon sugar on top in an even layer.
- Step 9
Bake the cookie bars for about 25 minutes or until the edges are evenly golden.
- Step 10
Allow the bars to cool completely before cutting into squares.
Per serving
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