Grease a large baking sheet with butter and set aside.
In a nonstick pan, add the butter and melt.
Once melted, add the milk and sugar and bring to a boil.
Boil for 1 minute.
After 1 minute, add the peanut butter and the mini marshmallows and stir until melted.
Take the mixture off the heat and add the salt, rolled oats, coconut, and coconut extract.
Stir until combined.
Spoon or scoop onto the prepared baking sheet and let them cool.