Are these healthy peanut butter cookies actually sugar free?

Yes. The recipe uses erythritol, a naturally derived sugar alcohol that provides sweetness without raising blood sugar. There is no added cane sugar, honey, maple syrup, or any other refined sweetener. The natural peanut butter does contain a trace of naturally occurring sugar from the peanuts, so the total sugar per cookie is under 1 gram.

Can I use almond butter instead of peanut butter?

Absolutely. Almond butter works very well here and gives a slightly milder, earthier flavour. Use the same quantity. Just make sure to choose a natural variety with no added sugar or palm oil.

Are these cookies gluten free?

They can be. Oats are naturally gluten free, but they are often processed in facilities that handle wheat. If you need these to be strictly gluten free, choose a bag of certified gluten-free oat flour and you are all set.

How do I know when the cookies are done baking?

The edges should look lightly golden and the tops should appear just set, not shiny or wet. They will still feel soft in the centre when you press them gently. That softness is exactly what you want. They firm up significantly as they cool.

Can I freeze these sugar free peanut butter cookies?

Yes, they freeze well. Once fully cooled, layer them between sheets of parchment in a freezer-safe container. They keep for up to 2 months. Thaw at room temperature for about 20 minutes before eating.

My cookies came out crumbly. What went wrong?

The most common cause is measuring peanut butter that has not been stirred properly, leaving too much dry peanut solids and not enough oil in the dough. Make sure to stir the jar thoroughly before measuring. You can also try adding a teaspoon of water to the dough to bring it together.

Healthy Peanut Butter Cookies Sugar Free with Oat Flour and Chia Seeds

Name: Healthy Peanut Butter Cookies Sugar Free with Oat Flour and Chia Seeds
Prep time: 10 min
Cook time: 12 min
Total time: 22 min
Yield: 16 servings
Cuisine: American
Ingredients: 1 cup natural smooth peanut butter (no added sugar or oil, stir well before measuring); 1/2 cup oat flour (use certified gluten-free oat flour if needed); 1/2 cup granulated erythritol (or other granulated natural sweetener such as monk fruit blend); 1 large egg (at room temperature); 1 tablespoon chia seeds; 1 teaspoon pure vanilla extract; 1/2 teaspoon baking soda; 1/4 teaspoon fine sea salt; 1 pinch flaky sea salt (optional, for topping)

Gluten-FreeDairy-FreeRefined Sugar-Free

Prep Time10 min

Servings16

Calories108 kcal

Health Score8/10

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Healthy Peanut Butter Cookies Sugar Free with Oat Flour and Chia Seeds

Some cookies deserve a permanent spot in your weekly baking rotation, and these ones genuinely earn that place. Made without any refined sugar, these healthy peanut butter cookies deliver the deep, nutty flavour you love in a far more nourishing package. They are ideal for anyone managing blood sugar levels, following a lower-carb lifestyle, or simply trying to cut back on the sweet stuff without feeling deprived. Even the kids will reach for these without any convincing, which is always a win.

The ingredient list here is small but every item pulls its weight. Natural peanut butter forms the flavour backbone, bringing healthy monounsaturated fats, protein, and a richness that no extract can replicate. Oat flour adds a gentle chewiness and bumps up the fibre content significantly compared to plain white flour. Granulated erythritol steps in as the sweetener, providing the sweetness your taste buds expect without spiking blood glucose, and it bakes beautifully without any bitter aftertaste. A tablespoon of chia seeds might seem like a small addition, but it quietly boosts omega-3 fatty acids and fibre in every single bite. One egg binds everything together, and a touch of vanilla extract rounds out the flavour with warmth. A pinch of baking soda lifts the cookies just enough so they stay soft rather than dense.

Fresh from the oven, these cookies have slightly crisp edges with a chewy, almost fudgy centre. The peanut butter flavour is front and centre, which is exactly what you want. As they cool on the rack, they firm up a little more, making them easier to handle and even better for dunking into a glass of oat milk or a cup of black coffee. A light sprinkle of flaky sea salt on top before baking is completely optional but genuinely transformative, creating that addictive sweet-salty contrast. You can also press a couple of dark chocolate chips into the top of each cookie if you want a little extra indulgence without going overboard on sugar. Serve them alongside a smoothie for an afternoon snack, or wrap a couple up for a lunchbox treat that actually provides lasting energy rather than a sugar crash.

From a nutritional standpoint, each cookie comes in under 110 calories, with around 5 grams of protein and 2 grams of fibre per serving. Compared to a standard peanut butter cookie, which can carry upwards of 15 grams of sugar per biscuit, these contain less than 1 gram of sugar. The oat flour provides slow-release carbohydrates, making these genuinely suitable for people watching their glycaemic response. They are naturally gluten-free when made with certified gluten-free oat flour, dairy-free, and refined sugar free from start to finish. Chia seeds add a subtle crunch and deliver plant-based omega-3s alongside soluble fibre that supports digestive health. This is the kind of recipe your nutritionist would actually be pleased to see you baking on a Sunday afternoon.

Ingredients

Serves:16

1 natural smooth peanut butter (no added sugar or oil, stir well before measuring)
1 oat flour (use certified gluten-free oat flour if needed)
1 granulated erythritol (or other granulated natural sweetener such as monk fruit blend)
1 large egg (at room temperature)
1 chia seeds
1 pure vanilla extract
1 baking soda
1 fine sea salt
1 flaky sea salt (optional, for topping)

Instructions

1
Preheat your oven to 175C (350F) and line a large baking sheet with parchment paper. Set it aside while you mix the dough.
Give the parchment a very light spray of cooking oil if your cookies tend to stick.
2
In a large mixing bowl, combine the natural peanut butter, granulated erythritol, egg, and vanilla extract. Stir everything together with a wooden spoon or rubber spatula until smooth and well incorporated.
Make sure your peanut butter is fully stirred before measuring so you get a consistent fat-to-solid ratio throughout the dough.
3
Add the oat flour, chia seeds, baking soda, and fine sea salt to the bowl. Fold gently until a soft, slightly sticky dough forms. Do not overmix.
The dough will feel a little tacky. That is completely normal and it firms up beautifully during baking.
4
Scoop the dough into 16 equal portions using a tablespoon or small cookie scoop. Roll each portion lightly between your palms to form a smooth ball, then place them on the prepared baking sheet about 5cm apart.
5
Use a fork to gently press a crosshatch pattern into the top of each cookie ball, flattening them to about 1cm thick. If the fork sticks, dip it in a little water between presses.
The crosshatch is classic for a reason. It helps the cookies bake evenly all the way through.
6
Sprinkle a tiny pinch of flaky sea salt over each cookie if using. Slide the tray into the preheated oven and bake for 11 to 13 minutes, until the edges are lightly golden and the centres look just set.
Pull them out when they look slightly underdone. They firm up considerably as they cool and will be perfectly chewy once rested.
7
Remove the tray from the oven and leave the cookies to cool on the baking sheet for 10 minutes before transferring to a wire rack. They are fragile while warm, so resist the urge to move them too soon.

Nutrition per serving

108kcal

Calories

Protein

Carbs

Fat

Fibre

0.8g

Sugar

95mg

Sodium

Pro Tips

✓
Use natural peanut butter with peanuts as the only ingredient for the best flavour and health profile.
✓
Erythritol can crystallise slightly as the cookies cool, giving a subtle crunch. If you prefer a smoother texture, try a powdered erythritol blend instead.
✓
Let your egg come to room temperature before mixing. It blends into the peanut butter far more easily and gives a more even dough.
✓
Do not skip the resting time after baking. These cookies need those 10 minutes to set or they will crumble when you pick them up.
✓
For extra fibre, swap up to 2 tablespoons of the oat flour for ground flaxseed.
✓
If your dough feels too dry or crumbly, add one teaspoon of water at a time until it just comes together.

Frequently Asked Questions

Variations

•
Dark Chocolate Chip Version
Press 3 to 4 sugar-free dark chocolate chips into the top of each cookie just before baking. This adds a rich, bittersweet contrast to the nutty base without significantly increasing the sugar content.
•
Cinnamon Spice Cookies
Add 1 teaspoon of ground cinnamon and a pinch of ground ginger to the dry ingredients. The spices deepen the peanut butter flavour and add a subtle warming quality that makes these feel extra cosy in cooler months.
•
Chocolate Drizzle Finish
Melt 30 grams of 85 percent dark chocolate and drizzle it over the cooled cookies with a fork. Let the chocolate set at room temperature or pop the tray in the fridge for 5 minutes to speed things up.
•
Protein Boost Cookies
Replace 2 tablespoons of the oat flour with unflavoured or vanilla plant-based protein powder. This bumps the protein content per cookie up to around 7 to 8 grams, making them a solid post-workout snack.

Substitutions

•
Erythritol → Monk fruit sweetener or allulose (Use the same quantity. Allulose gives an especially soft and chewy result. Avoid regular sugar to keep the recipe refined sugar free.)
•
Oat flour → Almond flour (Use the same quantity. The cookies will be slightly denser and more moist, with a softer bite. This also makes them lower in carbohydrates and keeps them keto-friendly.)
•
Egg → 1 flax egg (1 tablespoon ground flaxseed mixed with 3 tablespoons water, rested for 5 minutes) (This makes the recipe vegan. The cookies will be slightly softer and may spread a touch more during baking.)
•
Chia seeds → Ground flaxseed (Use the same quantity. Ground flaxseed blends in more seamlessly if you prefer a smoother texture without any visible seeds.)
•
Natural peanut butter → Sunflower seed butter (Great for nut-free households. The flavour is different but still delicious. Note that sunflower seed butter can turn green when baked with baking soda, which is harmless but can look surprising.)

🧊 Storage

Store cooled cookies in an airtight container at room temperature for up to 4 days. For longer storage, keep them in the fridge for up to 7 days. Bring to room temperature before serving for the best texture.

📅 Make Ahead

The cookie dough can be made up to 24 hours ahead and stored covered in the fridge. Scoop and flatten just before baking. You can also pre-roll the dough balls and refrigerate them on a tray, then fork-press and bake straight from cold, adding 1 to 2 extra minutes to the bake time.