Oatmeal Cookie Bars

Step 1

Preheat oven to 350F (175C) and line a 9x9 metal baking pan with parchment paper or grease and flour the sides and bottom of the pan.*

Step 2

Combine butter and sugars in a large bowl and stir until well-combined.

Step 3

Add eggs and vanilla extract and stir well.

Step 4

In a separate bowl, whisk together flour, cornstarch, baking powder, salt, and cinnamon (if using).

Step 5

Gradually add dry ingredients to wet until completely combined.

Step 6

Add oats and chocolate chips and stir until well combined.

Step 7

Spread cookie dough evenly into prepared baking pan and bake on 350F (175C) for 35-40 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.