Prepare the pan: Line an 8x8-inch square pan with parchment, leaving overhang for easy lifting. Lightly spritz with oil if you like.
Combine dry ingredients: In a large bowl, whisk almond flour, protein powder, cocoa powder, sweetener, and salt until no lumps remain. Stir in chopped almonds.
Add wet ingredients: Add almond butter, melted coconut oil, and vanilla.
Use a sturdy spatula to work it into a thick dough. If too dry or crumbly, add almond milk 1 tablespoon at a time.
Adjust texture: You’re aiming for a soft, slightly tacky dough that holds when pressed. It should not be runny.
Add a touch more almond flour if it gets too sticky.
Press into pan: Transfer the dough to the lined pan. Press firmly into an even layer, paying attention to corners. A second piece of parchment helps you press without sticking.
Optional chocolate top: Melt chocolate chips with coconut oil in short microwave bursts or over a double boiler.
Spread a thin layer over the base.
Chill to set: Refrigerate for 45–60 minutes, or freeze for 20–25 minutes, until firm enough to slice cleanly.
Slice and serve: Lift out by the parchment. Cut into 12 bars for snack size or 8 bars for meal-size portions. Wipe the knife between cuts for neat edges.