Preheat oven to 350 Line a cookie sheet with parchment paper or use a non-stick cooking spray.
In a large mixing bowl cream together butter or non-dairy substitute, sugars, and peanut butter.
The mixture will become a light color and fluffy.
Add eggs and vanilla and mix well.
Add all oats and baking soda, mix to combine. Stir in candy and chips if you choose that option.
Press mixture onto the prepared baking sheet using a spatula and/or your hands.
Bake for 18-20 minutes. The edges will get lightly brown. The center will firm up as it cools. It's best to let these bars sit for 45-60 minutes before cutting. I always sample the edges because I can't wait that long!!
Store in an airtight container or freeze for longer storage.