Step 1: Prepare the Cookie Dough
Cream the butter and sugar: In a bowl, mix the softened butter and sugar using a whisk or a mixer until creamy.
Add the eggs: Incorporate the eggs one by one, then add the vanilla flavoring. Mix until smooth.

Incorporate the dry ingredients: Sift the flour, baking powder and salt, then incorporate them into the mixture by mixing with a spatula.
Add the chocolate: Incorporate the chocolate pieces or chips into the dough.
Step 2: Assembly and filling
Prepare the mold: Grease a round mold or a pie dish about 25 cm in diameter.
Spread the dough: Spread half of the cookie dough on the bottom of the mold, pressing lightly to obtain an even layer.
Add the filling (optional): Spread a generous layer of spread on the dough, making sure not to touch the edges. Cover with the rest of the cookie dough, smoothing the top well.
Step 3: Baking the Giant Cookie
Preheat the oven: Set it to 180 ° C (fan-assisted).
Bake: Bake the giant cookie for 30 minutes, or until golden brown on the edges but still slightly soft in the center.
Cool slightly: Leave the cookie in the pan for 10 minutes before removing or serving directly.