Gather all your ingredients, grease your cookie tray, measure everything then set aside.
Add butter and sugar to a stand mixer bowl, use the paddle attachment to cream the butter and sugar for about ten minutes.
Add in the brown sugar, vanilla extract and eggs then mix again.
Add the dry ingredients to the bowl and mix. Add the chocolate chunks and Cadbury mini eggs to the bowl and give the cookie batter a final mix until everything is fully incorporated.
Allow the cookie dough to rest for a couple minutes before scooping the cookies onto a cookie tray. Place the cookies two inches apart on the cookie tray and bake for 12 minutes.
Once you notice the cookies start to brown, remove the cookies from the oven. Leave the cookies on the cookie tray for ten minutes before placing the cookies on a cooling rack to fully cool.