Oil 7 ½" x 9 ½" baking dish (or similar size) with coconut oil.
Melt peanut butter, sweetened condensed coconut milk, and salt in a pan on medium-heat until melted and well combined.
Place in the refrigerator to set, about 1-2 hours.
Chocolate Layer
Melt chocolate chips in a heatproof bowl over a pan with a couple inches of water. This will act as a double boiler. (If you have a double boiler, use that.)
Heat on low until melted. Add coconut oil. Mix well.
Pour over peanut butter layer. Place in the refrigerator to set, about 1-2 hours.
Video
Notes
An 11.25-ounce can of Nature's Charm sweetened condensed coconut milk has 1 cup of Sweetened condensed coconut milk in it, so you'll use the whole can.If you use another brand or homemade, make sure to measure 1 cup.These bars last about a week in an airtight container in the fridge. Since these contain sweetened condensed coconut milk, they need to be stored in the fridge.