Preheat the oven to 350 degrees and line a cookie sheet with parchment paper.
In a medium sized mixing bowl, cream butter, white sugar, and brown sugar together.
Add egg and vanilla and mix well.
Stir in flour, baking cocoa, baking soda, and salt.
Add 1 cup of chocolate chunks and ¾ cup mini chocolate chips (save the rest for garnishing) and stir until combined.
Using a two tablespoon cookie scoop, roll cookie dough balls and place them 2” apart on the prepared cookie sheet.
Bake for 9-10 minutes. Look for the edges and center to be set, but the center still slightly gooey (cookies will finish baking on the cookie sheet after they are removed from the oven).
Remove from the oven and immediately press extra chocolate chunks and chocolate chips into the cookies (option to leave these untouched or spread the chocolate around once they melt).
Let cookies cool on the cookie sheet for 5 minutes before moving to a cooling rack to cool.
Serve warm and gooey or let cool completely.
ENJOY!
