Because the classic stuff is basically a sugar slab pretending to be festive. But this version? Three ingredients. Five minutes. No glucose guilt. It’s crisp, snappy, and stores beautifully—aka keto candy gold.
💡 The Secret Behind This Low-Carb Win
- Allulose or BochaSweet caramelizes without spiking blood sugar or crystallizing
- Butter + peanuts = perfect fat-to-crunch ratio
- Sets firm and cracks like classic brittle—if you chill it right
No syrup, no corn solids, no fake flavors. Just straight-up keto magic.
🧾 Ingredients That Kept It Keto
- 1 cup salted dry roasted peanuts (140g) – Classic, crunchy, and salty enough to balance the sweet
- ½ cup powdered allulose or BochaSweet (96g) – The key to smooth, caramel-like melt without grit
- 2 tbsp butter (28g) – Gives that rich, buttery finish
💡 Want room-temp stable brittle? Sub part of the sweetener with powdered erythritol (see notes below).
🔁 Keto Swaps That Actually Work
Swap In | For What | Texture Impact |
---|---|---|
Powdered erythritol (½–1/3 mix) | BochaSweet or allulose | Harder set, slightly grainy |
Almonds, pecans, or macadamias | Peanuts | Higher fat, great crunch |
Brown “sugar” erythritol (½ tbsp) | None (optional) | Adds caramel flavor nuance |
⚠️ What I Got Wrong
What Went Wrong | Why It Happens | How to Fix It |
---|---|---|
Didn’t set firm enough | Not cooled long enough or used too much allulose | Chill longer or mix with erythritol |
Burned or bitter | Cooked too hot or didn’t stir | Medium heat, constant stirring |
Too soft at room temp | Used allulose only | Use combo sweetener or freeze to store |
👩🍳 How to Make It (Step-by-Step)
- Line a baking sheet with parchment—overhang the edges for easy lift.
- In a small saucepan over low heat, melt sweetener and butter together.
- Increase to medium-high and cook, stirring, until mixture foams and turns golden (~3–5 min).
- Remove from heat, stir in peanuts, and quickly pour onto parchment.
- Spread into a rough 7-inch square.
- Chill in freezer for 15–30 minutes, until set.
- Break into 16 pieces and store chilled.
🧠 Pro Tip: Want it snappier at room temp? Replace 2 tbsp allulose with powdered erythritol—firmer, but can get a little grainy.

🧊 Storage + Keto Tracking Tips
- Fridge or freezer: Store airtight up to 3 months
- Room temp (with erythritol): Sets harder, less sticky—but may crystallize
- 1 piece = 66 kcal | 1.2g net carbs
❓ Real Keto Questions, Real Answers
Can I use granular sweetener?
Nope. Only use powdered—granular won’t melt smoothly and will leave crystals.
Is this really crunchy?
Yes—if cooled properly. It snaps like traditional brittle and melts clean in your mouth.
Will this spike my blood sugar?
Not if you use BochaSweet, allulose, or erythritol—all have zero glycemic impact when used correctly.
🔢 Full Nutrition Facts (Per Square, 16 Total)
Nutrient | Amount |
---|---|
Calories | 66 kcal |
Fat | 6 g |
Saturated Fat | 1.6 g |
Protein | 2.2 g |
Total Carbs | 1.9 g |
Fiber | 0.8 g |
Net Carbs | 1.2 g |
Sugar | 0.4 g |
Check out More Recipes:
- Sugar-Free Shortbread Cookies – Buttery, Nutty, and Lightly Low-Carb
- Sugar-Free Almond Flour Cookies – Low-Carb, Gluten-Free, and Seriously Nutty
- Sugar-Free Edible Cookie Dough – Low-Carb, No Bake, and 100% Craveable

Sugar-Free Shortbread Cookies – Buttery, Nutty, and Lightly Low-Carbanut Brittle
Description
Crunchy, salty-sweet peanut brittle made with just 3 keto-friendly ingredients—zero sugar, full nostalgia.
Ingredients
Instructions
- Line a baking sheet with parchment.
- Melt sweetener + butter in saucepan over low heat.
- Increase heat and cook until golden, foamy, and bubbling (~3–5 min). Stir constantly.
- Remove from heat, stir in peanuts, and pour onto parchment.
- Spread evenly to about 7” square.
- Freeze 15–30 minutes until fully set.
- Break into 16 pieces and store in freezer or fridge.
Notes
- Add 2 tbsp erythritol for a harder brittle at room temp
- Don’t walk away while cooking—it goes fast from golden to burnt
- Other nuts work too: pecans, almonds, or macadamia
- Keep it chilled for best snap and zero stickiness