Preheat your oven to 350°F (175°C) and prepare a 9-inch round cake pan by lightly greasing it with butter or non-stick spray.

In a medium bowl, whisk together 2 1/4 cups of all-purpose flour, 1 teaspoon of baking soda, and 1/2 teaspoon of salt until well combined.

In a large mixing bowl, combine 1 cup of melted unsalted butter with 3/4 cup of brown sugar and 3/4 cup of granulated sugar. Mix vigorously until smooth and creamy.

Once combined, add in 2 large eggs and 1 teaspoon of vanilla extract, whisking until everything is well incorporated.

Gradually add the dry ingredient mixture to the wet ingredients, stirring gently until just combined. Fold in 1 cup of semi-sweet chocolate chips.

Spread the cookie dough evenly into the greased cake pan and bake for 20-25 minutes.

Once baked, let it cool in the pan for about 15 minutes. Prepare the frosting by beating 1/2 cup of softened unsalted butter until creamy.

Gradually add 3 cups of powdered sugar, mixing in 2-4 tablespoons of heavy cream until the frosting reaches a light and fluffy consistency.

After the cake has cooled, remove it from the pan and frost the top with your buttercream frosting.

Cut the cake into 8-10 slices and enjoy!