In a small bowl, combine the crushed graham crackers or oat crumbs with the melted butter until evenly coated.
Divide the mixture between serving cups or ramekins, pressing gently to create an even crust.
In a mixing bowl, beat together the Greek yogurt, peanut butter, softened cream cheese, honey, and vanilla until completely smooth.
Spoon or pipe the Peanut Butter Greek Yogurt Cheesecake Cups filling evenly over each prepared crust.
Smooth the tops with the back of a spoon or an offset spatula.
Refrigerate for at least 1–2 hours until set. For the best texture, chill overnight.
Before serving, garnish with mini chocolate chips, chopped peanuts, banana slices, or a drizzle of melted chocolate.