Melt chocolate morsels and coconut oil in the microwave or over the stove top.
After chocolate mixture is smooth, use a paint brush and coat the inside cavity of each heart mold. Leave a thick coating over cavity.
Place into the freezer for 10 minutes. Remove from the freezer and lightly coat the cavity with another layer of melted chocolate. You want the sides of each cavity to have a nice thick coat. Return to the freezer for 10 minutes.
Place peanut butter in a small bowl and place in a microwave for 30 seconds. Having a softened peanut butter mixture makes it easier to place in the cavity. Now combine all other ingredients with the peanut butter and mix well.
Remove mold from the freezer and place dollops of peanut butter mixture into the mold. Spread around inside mold. Most likely these will look a little messy and that's normal.
Return to freezer for about 10 minutes.
Reheat chocolate mixture and remove hearts from the freezer.
Now paint melted chocolate over the peanut butter to encapsulate the peanut butter.
Again allow to freeze for 15-20 minutes, then remove from freezer. Chocolate covered peanut butter hearts can easily be removed from the molds. Store in an airtight container 4-5 days.