Line a 13X9 baking pan with enough parchment paper for an overhang for ease to remove treats and set aside.

In a large pot over medium heat melt the butter and add the marshmallows until completely melted, stirring occasionally. (I used a nonstick pot for this)

Add the peanut better stirring vigorously until well combined and simmer until the mixture is hot again and stir in the vanilla.

Add the rice cereal and stir until mixed well and coated, work fast because this sets fast.

Pour into baking pan and pat down so it's even. I found that using my hand to push down the mixture into the pan worked well, since it's hot use a piece of parchment and your hand over that to protect yourself from being burned. If you use a large spatula to do this, spray it with a nonstick cooking spray and that will help it not stick. Use a bit of elbow grease because you want this compacted well on all areas. Set aside to cool.

While the treats are cooling melt the chocolate and coconut oil together until smooth. Using a double boiler for this or I used a microwave set at 50% power and microwaved in 1 minute intervals and stirring in-between until smooth.

Pour chocolate over the top of the treats and use a rubber spatula to scrape bowl to get all the chocolate out of the bowl and smooth evenly all over the top.

While chocolate is still fresh, sprinkle the crushed peanuts all over the top and let the treats set for an two hours or so on the counter or in the fridge. Lift the bars out with the parchment paper and cut into large or small bars and enjoy