High-Protein Peanut Butter Fudge
Peanut butter and protein powder pressed into cubes — ready in 40 minutes
This high-protein peanut butter fudge stirs natural peanut butter with protein powder and a sugar-free sweetener, presses the mixture into a pan, and chills until firm enough to cut into cubes, like the plate. Each piece has 6 g of protein and 3 g net carbs.
Low carb, sugar-free, and no bake.
Why you’ll love this fudge
- 6g protein per piece
- 3g net carbs
- Peanut butter
- Ready in about 40 minutes
- No bake
- Cubes
Health notes
- Protein: Protein powder and peanut butter.
- Low carb: Sugar-free sweetener. No regular sugar.
- Sugar-free: No added sugar.
- Keto-friendly: Each piece stays around 3g net carbs if the peanut butter is measured.
Key element — chill until firm
A warm mixture is soft. Chill at least 30 minutes so the cubes hold, like the plate.
Ingredients
Fudge (16 pieces)
- 1 cup natural peanut butter (no sugar added)
- 2 scoops (about 50g) vanilla or unflavored protein powder
- ¼ cup sugar-free sweetener
- 2 Tbsp coconut oil or butter, melted
- 1 tsp vanilla extract
- Pinch of salt
Swaps
- Regular sugar or a sweetened peanut butter: Not in the 3g number.
- Almond butter: Same amount. Carbs stay close.
- No protein powder: Protein drops. The fudge is softer.
- Extra coconut oil: It sets firmer. Calories rise a little.
Instructions
| 1 | Mix. Stir the peanut butter, protein powder, sweetener, melted coconut oil, vanilla, and salt until smooth and thick. |
| 2 | Press. Press the mixture firmly into a parchment-lined 8×8 inch pan. Smooth the top. |
| 3 | Chill. Refrigerate at least 30 minutes until firm. |
| 4 | Cut. Lift the fudge out and cut into 16 cubes, like the plate. This batch makes 16 pieces. |
Pro tips
- Use natural peanut butter with no added sugar. Sweetened peanut butter is not in these numbers.
- Chill fully so the cubes hold.
- Press firmly so there are no air pockets.
- Store in the fridge. It softens at room temperature.
- Macros are per piece, 16 from this pan.
Nutrition
| Nutrient | Per piece |
|---|---|
| Calories | 120 |
| Protein | 6g |
| Net carbohydrates | 3g |
| Total carbohydrates | 4g |
| Fiber | 1g |
| Total fat | 9g |
| Sodium | 80mg |
Estimates based on natural peanut butter, protein powder, sugar-free sweetener, and coconut oil, divided into 16 pieces. Regular sugar and a sweetened peanut butter are not included.
Variations
Almond butter
Same amount. Carbs stay close.
No protein powder
Use more peanut butter. Protein drops. The fudge is softer.
Chocolate
Add 1 Tbsp cocoa powder. Flavor is richer.
Extra firm
Add an extra tablespoon of coconut oil.
Storage
| Method | Time | Notes |
|---|---|---|
| Refrigerator | Up to 2 weeks | Cover once set |
| Best chilled | Right away | It is firmest after 30 minutes |
| Freezer | Up to 2 months | Cut first. Thaw in the fridge |
FAQ
Test your knowledge
5 quick questions about this peanut butter fudge
1. Protein per piece?
2. Net carbs per piece?
3. What keeps the cubes firm?
4. About how long does this take?
5. What is not in the 3g number?
