Prep the pan. Line a mini muffin pan with paper liners or use silicone cups.
This makes removing the bites easy and keeps the crust intact.
Make the crust. In a bowl, stir together the chocolate cookie crumbs, melted coconut oil or butter, maple syrup (if using), and a pinch of salt until the mixture looks like damp sand and holds when pressed.
Press and set. Divide the crust mixture among the cups (about 1 heaping teaspoon each). Press firmly with the back of a spoon to form an even base. Place the pan in the freezer while you make the filling.
Beat the cream cheese. In a separate bowl, beat the softened cream cheese with a hand mixer until smooth and fluffy, about 1–2 minutes.
Scrape the bowl.
Add yogurt and flavorings. Mix in the Greek yogurt, vanilla, and salt until silky and well combined.
Blend in the dry ingredients. Add protein powder, cocoa powder, and powdered sugar. Start on low speed to avoid a puff of powder, then increase speed until smooth. If the mixture is too thick, add milk 1 tablespoon at a time.
The filling should be creamy and spoonable, not runny.
Optional chocolate boost. If using melted dark chocolate, let it cool slightly, then beat it into the filling for extra richness.
Fill the cups. Remove the chilled crusts from the freezer. Spoon or scoop the filling over each crust, smoothing the tops with the back of a spoon. Tap the pan gently to level.
Chill to set. Refrigerate for at least 2 hours, or freeze for 45–60 minutes, until firm enough to peel from the liners cleanly.
Finish and serve. Add mini chocolate chips, fruit, or a pinch of flaky salt.
Enjoy straight from the fridge for the best texture.