Prepare pan: Line a loaf pan with parchment paper and set aside.
Make dough: In a medium bowl, combine peanut butter, protein powder, peanut powder, flaxseeds, maple syrup, and salt. Mix together with a spoon or spatula until well-combined. The texture should resemble a thick cookie dough and should form a ball when pressed together.
Add to pan: Transfer the dough to your loaf pan. Using your fingers or the back of a spoon, press it onto parchment paper until it forms an even layer covering the pan. Make it as flat as you can.
Melt chocolate: In a microwave safe dish, microwave chocolate chips in 30-second intervals. Stir between each interval to avoid burning. Microwave until the chocolate chips are just melted and smooth.
Pour chocolate: Pour the melted chocolate over the dough. Use the back of a spoon or a spatula to spread evenly over protein bars.
Refrigerate: Immediately top chocolate with sea salt and transfer to the fridge. Cool for at least 1 hour.
Slice: Remove the parchment paper and protein bars from the fridge and slice into squares. Keep stored in a covered container in the fridge and enjoy!
Calories: 218kcal, Carbohydrates: 15g, Protein: 10g, Fat: 15g, Saturated Fat: 4g, Polyunsaturated Fat: 4g, Monounsaturated Fat: 6g, Trans Fat: 0.01g, Cholesterol: 11mg, Sodium: 155mg, Potassium: 210mg, Fiber: 3g, Sugar: 8g, Vitamin A: 13IU, Vitamin C: 0.02mg, Calcium: 60mg, Iron: 1mg