Whisk butter and both sugars in large bowl until combined. Add food coloring and mix. Add eggs one at a time, whisking after each. Whisk in the salt and vanilla.
Add the cocoa powder and flour and mix until well combined. Stir in the chocolate chips. Place into a greased 8x8 baking dish. I like to sprinkle a little extra chocolate on top here.
Bake for 30-35 minutes or until done. Enjoy ;)
Notes
Chocolate chunks may be hard to find as they don't sell them at every grocery store, however, I love them because they are like extra big chocolate chips so they really make these brownies chocolatey and gooey.