Preheat oven to 350, line two baking sheets with parchment paper or silicone baking mats and set aside.
In a large bowl with a hand mixer or a sand mixer cream together the butter, brown sugar and granulated sugar. Scrape down the sides of the bowl with a spatula, then add in the vanilla extract and beat until combined, scrape down the sides again.
Now mix in the dry ingredients - baking soda, baking powder, salt, oats and flour and mix until incorporated.
Next you're going to chop up the candy, you can do so by pulsating it for 5-10 seconds in a food processor or chop up the SNICKERS and Heath bars with a knife, just make sure that the candy is in small pieces, no bigger than the chocolate chips.
Add the candy pieces and chocolate chips to the cookie batter and stir with a wooden spoon until incorporated.
With a cookie scoop or a tablespoon form balls of cookie dough and place 2 inches apart on a baking sheet. Repeat until cookie sheet is full and then slightly press down on the cookie balls.
Bake for 10-12 minutes or until the cookie edges start to brown. Remove from oven, let rest for 10 minutes, then transfer to a cooling rack and allow to cool.
Repeat making dough balls and baking until all the batter is used, then enjoy!