If you haven't already prepare the cannabutter in a crockpot or instant pot.
In a stand mixer with a whisk, mix together sugar and butter.
Mix on low speed until well blended.
Increase speed to medium and beat for another 3 minutes.
Add vanilla and cream and continue to beat on medium speed for 1 minute more, adding more cream if needed for spreading consistency.
If using, add food coloring now and mix.
Once your desired consistency is achieved, turn off the mixer.
Frost immediately or store in the refrigerator if needed.
