Low Carb Peanut Butter Bars (Air Fryer Recipe)

These low carb peanut butter bars are an easy, keto-friendly dessert with a rich chocolate layer and a chewy almond flour crust. Best of all, they’re made in the air fryer—no oven needed!

If you’re looking for a quick, sugar-free treat, these bars are the perfect balance of sweet, creamy peanut butter and decadent chocolate. Even my husband, who isn’t a big peanut butter fan, couldn’t stop eating this low-carb desert!

Ingredients for Low Carb Peanut Butter Bars

Bottom Layer (Cookie Base)

• 3/4 cup almond flour
• 3 tablespoons stevia or keto sweetener
• Pinch of salt
• 3 tablespoons butter, melted
• 1 teaspoon vanilla extract

Middle Layer (Peanut Butter Filling)

• 1/2 cup unsweetened peanut butter
• 3 tablespoons stevia
• 1/2 teaspoon vanilla extract

Top Layer (Chocolate Topping)

• 8 ounces sugar-free chocolate chips
• 4 tablespoons heavy cream

How to Make Low Carb Peanut Butter Bars in the Air Fryer

Step 1: Prepare the Cookie Base

1. Mix all base ingredients together in a bowl.
2. Press into a small 8×8 baking dish (or smaller for thicker bars).
3. Air fry at 375°F for 10 minutes.
4. Let cool completely before adding the next layer.

Step 2: Make the Peanut Butter Filling

1. In a mixing bowl, combine peanut butter, stevia, and vanilla.
2. Spread evenly over the cooled cookie base.

Step 3: Add the Chocolate Topping

1. Melt sugar-free chocolate chips with heavy cream.
2. Spread over the peanut butter layer evenly.
3. Freeze for at least 1 hour until firm.

Step 4: Cut & Serve

• Once fully frozen, slice into 8 bars and enjoy!

Expert Tips for the Best Low Carb Peanut Butter Bars

Check Your Air Fryer: Cooking times can vary, so rotate the dish if needed.

Freeze Completely: The bars set best when fully frozen before slicing.

Let the Base Cool: Avoid layering too soon to keep the bars structured.

Storing & Freezing Instructions

• Refrigerator: Store in an airtight container for up to 1 week.
• Freezer: Freeze for up to 6 months – great for meal prep!

Why Use an Air Fryer for Keto Desserts?

Using an air fryer is a game-changer for keto recipes:

• Cooks faster than a conventional oven.
• Prevents overheating your kitchen.
• Creates the perfect texture for desserts.

Try these other air fryer keto recipes:

• Crispy Air Fryer Zucchini Chips – A crunchy, low-carb snack alternative to chips.
• BBQ Air Fryer Baby Back Ribs – Juicy, tender, and keto-friendly.
• Keto Slow Cooker Pot Roast– A deliciously simple keto crockpot dump meal.
• Easy Keto Cheesesteak Skillet – A flavorful one-pan dinner.
• Instant Pot Buffalo Chicken Salad – A healthy, protein-packed lunch.
• Crispy Low Carb Fried Chicken – No pork rinds needed!

More Easy Low-Carb & Keto Recipes

Looking for more sugar-free and low-carb treats? Try these favorites:

• Starbucks Pumpkin Cream Cheese Muffins Low Carb Copycat
• Keto Air Fryer Chocolate Chip Cookies – The best soft-baked cookies without the carbs.
• Keto Snickerdoodles
• Keto Raspberry Creamsicle Recipe (Low-Carb Popsicles)
• How to Make Perfect Air Fryer Banana Bread: A Complete Guide

These peanut butter bars also pair perfectly with my Easy No-Bake Keto Peanut Butter Cups for an extra indulgent treat!

FAQs About Low Carb Peanut Butter Bars

Are air fryers good for low-carb diets?

Yes! Air fryers are ideal for keto diets because they require less oil while creating crispy, satisfying textures.

Is peanut butter keto-friendly?

Yes! Choose unsweetened peanut butter with no added sugar to keep carbs low.

What’s the downside of using an air fryer?

The main downside is that air fryers have limited space, so large batches may need to be cooked in multiple rounds.

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