Place the coconut oil in a small bowl. Using a hand mixer, beat the coconut oil until creamy. Add in the palm shortening and SunButter and cream together.
Add in the powdered sugar, vanilla, and salt and cream again.
The coconut oil in this frosting may be warm from mixing, so you can chill this frosting for a bit to thicken it up.
* You can use any granulated sugar/sweetener that you like here, such as coconut sugar, raw cane sugar, or Truvia
Notes
This recipe will soften up quite a bit at room temperature, so if you want a more stable frosting recipe, use all palm oil instead of coconut oil