In a large mixing bowl, add the softened butter, brown sugar and granulated sugar. Mix together until combined.
Add the eggs and vanilla extract. Blend together again until smooth.
Dye the wet ingredients with a generous amount of blue food coloring to get a deep blue color. Mix until the color is evenly distributed.
Pour the flour, baking soda and salt into the wet ingredients and mix together with a spoon until a thick dough forms.
Mix in the chocolate chips, crushed Oreos, and crushed chocolate chip cookie pieces. Mix them until incorporated into the cookie dough.
Cover the bowl with plastic wrap and place in the refrigerator for 30 minutes to chill.
Preheat the oven to 350 degrees Fahrenheit and line a baking sheet with parchment paper. Set aside.
Use a large cookie scoop to scoop large balls of cookie monster cookie dough onto the prepared baking sheet. Top the dough balls with extra Oreo and chocolate chip cookie pieces.
Bake in the oven for 14 minutes until puffy. Remove from the oven and let cool and finish baking on the baking sheet for a few minutes before transferring to a wire rack to cool.
Notes
Great to serve and enjoy while still warm.
Store in an airtight container for 3-4 days.
Keyword blue cookies, cookie monster, sesame street