In a large bowl, combine the flour, cake mix and baking soda.
In another bowl, cream together the sugars and butter.
Mix in the egg and vanilla until it’s smooth and creamy.
Add the creamed mixture to the dry mixture and pour in the chocolate chips, M&Ms and sprinkles.
Now mix everything together.
Chill the dough for at least one hour.
Prepare baking pans.
Tower the cookies and bake for 12 minutes at 350 degrees.
Notes
Chilling the Dough: Chilling the cookie dough for at least an hour is essential for preventing the cookies from spreading too much during baking. This helps solidify the butter in the dough, resulting in thicker and chewier cookies. For even better results, consider chilling the dough overnight for enhanced flavor development.
Mix-ins Distribution: Ensure even distribution of chocolate chips, M&Ms, and sprinkles throughout the dough to guarantee every cookie has a balanced combination of flavors and textures. Fold the mix-ins into the dough gently but thoroughly to avoid overmixing, which can lead to tough cookies.
Baking Time and Temperature: Monitor the baking time closely to prevent overbaking. Bake the cookies at 350 degrees Fahrenheit for around 12 minutes, or until the edges are lightly golden brown. Remember that the cookies will continue to set as they cool on the baking sheet, so it's okay if they appear slightly underdone when removed from the oven. Allow them to cool for a few minutes on the baking sheet before transferring them to a wire rack to cool completely.