• Preheat the oven to 350 degrees F and line two 9x13-inch cookie sheets with parchment paper. Spray with nonstick cooking spray.

For the Cookies:

• In a large bowl, whisk together the dry ingredients (flour through salt).
• Add the rest of the ingredients and stir together until all the dry ingredients are incorporated. The dough will be very thick.
• Using a small cookie scoop, scoop 22 balls onto the two prepared baking sheets (or if using one cookie sheet, do two batches of 11 cookies each). Using your hands or something flat, like a glass, press the ball of dough out as much as you can (until it's about 1/4" thick). It helps to spray your hands/glass with nonstick cooking spray to prevent sticking. You will want to flatten the dough as much as you can because it will rise when baked.
• Bake for 5-7 minutes, or until a toothpick inserted in the center comes out mostly clean. When done, immediately transfer cookies to a wire rack to cool.

For the Chocolate Stuffing:

• Add all the ingredients to a medium mixing bowl. Use a hand mixer to mix until smooth.
• Once cookies are COMPLETELY cool, add about a tablespoon of frosting (16g) to 11 of the cookies.
• Add another cookie on top to make a cookie sandwich. Repeat for all cookies. Place all cookie sandwiches close together on a piece of parchment paper.

For the Chocolate Drizzle:

• Add chocolate chips and oil to a microwave safe bowl. Microwave in 30 second intervals, stirring in between, until all chips are melted.
• Place chocolate in a small ziplock bag and cut a tiny hole in the center. Drizzle chocolate over cookies in a diagonal-like fashion.