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5.0 from 93 votes

Low Carb Protein Bars Recipe (Peanut Butter)

It's easy simple to make fudgy and chewy low carb protein bars with peanut butter! This sugar free protein bars recipe will boost your energy after a workout and it is a fat-fuelled, protein-rich snack if you need a pick-me-up on the go. 

Prep Time
5 mins
Cook Time
5 mins
Total Time
30 mins
Servings: 8
Calories: 211 kcal
Course: Snacks
Cuisine: British

Ingredients

Base Layer
  • ½ cup / 130g peanut butter unsweetened, soft
  • 1 ½ tablespoon coconut flour
  • 1 tablespoon protein powder
  • 1 ½ tablespoon granulated sweetener
Top Layer
  • ½ cup / 130g peanut butter soft
  • 1 tablespoon cocoa powder unsweetened
  • 1 ½ tablespoon granulated sweetener
  • 1 tablespoon protein powder
  • 1 ½ tbsp coconut flour

Instructions

    Cup of Yum
  1. Preheat the oven to 175 Celsius / 350 Fahrenheit.
  2. Put the ingredients for the base and the top layer in separate bowls and mix with a fork, then knead with your hands to combine.
  3. Line an ovenproof dish with parchment paper. Spread the base layer, then add the top layer to fit a space of approximately 5 x 6 inches. 
  4. Bake for up to 25 minutes. The bars are ready when the top has set and is beginning to brown around the edges. Remove and let cool to room temperature before cutting. 

Notes

  • 2g net carbs per bar. Makes 8 sugar free protein bars.
  • Stir the peanut butter before using. It must have a soft consistency. You can use crunchy or smooth peanut butter. The crunchy peanut butter bars are a little harder to cut. If you want perfect edges and no crumbles, choose smooth peanut butter. 
  • You can use a larger ovenproof dish and only use part of its space. Simply build a divider made with aluminium foil. The mixture does not spread. 
  • Patience! The bars will be very soft and fragile while hot, but they firm up as they cool down. 

Nutrition Information

Calories 211kcal (11%) Total Carbohydrates 5.9g Protein 11.3g (23%) Fat 15.4g (24%) Saturated Fat 2.8g (14%) Polyunsaturated Fat 6.9g Monounsaturated Fat 4.7g Fiber 3.9g (16%) Sugar 2.5g (5%)

Nutrition Facts

Serving: 8Serving

Amount Per Serving

Calories 211

% Daily Value*

Calories 211kcal 11%
Total Carbohydrates 5.9g 2%
Protein 11.3g 23%
Fat 15.4g 24%
Saturated Fat 2.8g 14%
Polyunsaturated Fat 6.9g 41%
Monounsaturated Fat 4.7g 24%
Fiber 3.9g 16%
Sugar 2.5g 5%

* Percent Daily Values are based on a 2,000 calorie diet.