Now, let’s get into the fun part! Baking the Giant Chocolate Chip Cookie Cake is straightforward and incredibly satisfying. Follow these easy steps to create a masterpiece.

Start by preheating your oven to 350°F (175°C). Prepare a 12-inch round cake pan. Either grease it or line it with parchment paper, allowing for easy removal after baking.

In a large bowl, whisk together the flour, baking soda, cinnamon, and salt. This ensures that your leavening agents are evenly distributed through the flour. Set it aside for now.

In another mixing bowl, add the softened unsalted butter, brown sugar, and granulated sugar. Using an electric mixer, beat on medium speed until the mixture is light and fluffy.

This should take about 2-3 minutes. The secret here is that the fluffier the mixture becomes, the better your cake texture will be.

Next, add the eggs, vanilla extract, and orange zest to your buttery mixture. Beat well until everything is fully incorporated. The mixture should look smooth and creamy at this point.

Gradually add your flour mixture to the wet ingredients. Mix just until combined. Be careful not to over-mix; you want to keep that cake tender. Fold in the chocolate chips, distributing them evenly throughout the dough.

Pour the batter into your prepared cake pan. Use a spatula to smooth out the top so it’s even. Don’t worry if it’s not perfect; a little unevenness adds to the character! Sprinkle a few extra chocolate chips on top for that extra chocolatey look.

Slide your cake into the preheated oven and bake for about 25-30 minutes. Keep an eye on it; it’s done when the top is golden brown and a toothpick inserted into the center comes out clean.

Remove the cake from the oven and allow it to cool in the pan for about 10 minutes. After that, gently remove it from the pan and transfer it to a wire rack to cool completely.

While the cake cools, you can whip up the vanilla buttercream frosting. In a medium bowl, beat the softened butter with an electric mixer on medium speed until creamy.

Gradually add the powdered sugar, beating well after each addition. Pour in the vanilla extract and add heavy cream, one tablespoon at a time, until reaching your desired consistency. Don’t forget that pinch of salt!

Once your cake is completely cool, spread the buttercream frosting over the top. You can get creative with it! Add swirls, or piping, or keep it simple – it's all about your personal touch.

Slice up your Giant Chocolate Chip Cookie Cake, serve it to family and friends, and watch their faces light up with delight.