Step 1

Grate enough zest from the limes to measure 2 teaspoons.

Step 2

Halve the limes crosswise and squeeze the juice into a glass measuring cup. Add enough water to the juice to measure 1/2 cup in total.

Step 3

In a food processor, process the coconut until very fine. Add the protein powder, almond butter, lime zest, and lime juice-water mixture. Pulse until mixture is completely blended into a smooth dough.

Step 4

Roll dough into a log and cut into 5 equal pieces. Form each piece into a bar and tightly wrap in plastic wrap. Refrigerate for at least1 hour until firm.

Step 5

Optional topping: If desired, unwrap the bars and drizzle each with melted white chocolate; sprinkle with coconut and lime zest. Refrigerate for 15 minutes until chocolate is set; then re-wrap and refrigerate until ready to serve.