Preheat your oven to 350°F (175°C) and grease a 9-inch round cake pan or pizza pan.
In a mixing bowl, whisk together the flour, baking soda, and salt.
In another bowl, cream the softened butter with the granulated sugar and brown sugar using an electric mixer until the mixture is light and fluffy.
Add the eggs one at a time and mix well after each addition. Stir in the vanilla extract.
Gradually add the dry ingredients to the wet mixture, mixing until just combined. Be careful not to over-mix.
Stir in the chocolate chips or any other mix-ins like nuts or candy.
Spread the dough evenly into the prepared pan, pressing it down gently to fill the edges.
Bake for 20-25 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out clean.
Let the cookie cake cool in the pan for 10 minutes, then transfer it to a cooling rack to cool completely before decorating.
Once the cake is cooled, use frosting to decorate it with a "Happy Mother's Day" message or any design you like. Add sprinkles or edible glitter for extra flair.