Stir together all ingredients in a mixing bowl. (Add a pinch of salt if your pb is unsalted)
Taste and adjust for sweetness. Add a little extra milk if it's too think, or extra PB if it's too thin.
Optional: drizzle with melted chocolate or sprinkle with chocolate shavings. Enjoy!
Notes
What I used:Sweet Leaf Vanilla Creme Stevia DropsOrganic Peanut Butter from Aldi (just peanuts + salt)Mexican VanillaTo store: keep refrigerated for about 1 week in an airtight container.