Set up your base. In a mixing bowl, add 1 cup Greek yogurt, 1 scoop (about 30 g) chocolate protein powder, and 1 tablespoon unsweetened cocoa powder.
Add the peanut flavor. Stir in 1–2 tablespoons creamy peanut butter or 2–3 tablespoons powdered peanut butter. The more you add, the richer the peanut flavor.
Sweeten and season. Add 1–3 teaspoons sweetener, 1/2 teaspoon vanilla extract, and a small pinch of salt to sharpen the chocolate and peanut notes.
Adjust the texture. Pour in 2–4 tablespoons milk, a little at a time, whisking until smooth and pudding-thick. For a mousse-like set, go thicker; for a silkier pudding, add a splash more milk.
Whisk until glossy. Beat briskly for 30–60 seconds.
If using casein protein, let it sit for 2–3 minutes, then whisk again to reduce any graininess.
Taste and tweak. Add another pinch of salt, extra cocoa for deeper chocolate, or more sweetener if needed. Balance is key.
Chill. Transfer to a glass or ramekin, cover, and chill at least 20–30 minutes. It thickens as it rests and the flavors meld.
Top and serve. Finish with a drizzle of melted peanut butter, a few mini chips, or crushed peanuts for crunch.
Serve cold.