Cookie Jar Brownies

Deselect All

For the Shortbread and Cookie Dough Layers:

Cooking spray

24 square shortbread cookies (such as Lorna Doone)

1 1/2 cups all-purpose flour

3/4 teaspoon baking soda

1/2 teaspoon salt

1 stick unsalted butter, at room temperature

1 cup packed light brown sugar

1 large egg

1 teaspoon pure vanilla extract

1 cup assorted baking chips (such as chocolate, peanut butter and butterscotch)

1/2 cup M&M's

For the Brownie Layer:

2 sticks unsalted butter

4 ounces semisweet chocolate, chopped

2 cups granulated sugar

4 large eggs

1 2/3 cups all-purpose flour

1/3 cup unsweetened cocoa powder

1/2 teaspoon salt