Add the butter, peanut butter, salt, vanilla and golden monkfruit sweetener to a small saucepan.
Cook over medium-low heat until melted, stirring constantly. Remove from heat and stir in the powdered monkfruit sweetener until smooth and creamy.
Put the chocolate chips and oil in a microwave safe dish and cook in 30 second intervals at 50% power until melted.
Using a pastry brush, coat the inside of the egg molds with half of the melted chocolate.
Freeze for a couple minutes until hardened.
Remove from the freezer and fill each one with a spoonful of the peanut butter filling.
Top with the remaining chocolate, spreading it out so that no peanut butter is showing.
Freeze until completely hardened before taking them out of the mold.