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Keto Iced Peanut Butter Bars: Low-Carb Dessert Recipe

Olivia

By Olivia

Mar 9, 2026

15 min prep
30 min cook
12 servings
Jump to Recipe
Keto Iced Peanut Butter Bars: Low-Carb Dessert Recipe

Get ready to indulge in a heavenly treat that brings together the creamy richness of peanut butter with a delightful low-carb twist. These Keto Iced Peanut Butter Bars are not just a dessert; they are a nostalgic journey back to childhood, where every bite reminds you of sweet moments shared over treats. Perfect for satisfying your sweet tooth without the guilt, these bars are a must-try for any occasion!

With each bite, you’ll experience a melt-in-your-mouth sensation that will leave you wanting more. They’re quick to prepare and even quicker to disappear, making them a fantastic addition to your low-carb dessert repertoire.

Why You'll Love This Recipe

  • Guilt-Free Indulgence: Enjoy a rich dessert without derailing your keto lifestyle.
  • Quick and Easy: Simple steps mean you can whip these bars up in no time.
  • Childhood Nostalgia: A sweet treat that brings back fond memories of peanut butter delights.
  • Versatile Topping: Drizzle or spread the icing to your liking for a personalized touch!

About the Ingredients

Unsalted Butter

This provides a rich base for the bars, giving them a soft and creamy texture that melts in your mouth.

Smooth Peanut Butter (No Sugar Added)

The star of the show! It adds that classic peanut butter flavor without the added sugars, making your bars low-carb and delicious.

Low-Carb Brown Sweetener

This sweetener mimics the flavor of brown sugar without the carbs, ensuring your bars stay sweet and satisfying.

Fine-Blanched Almond Flour

A great low-carb alternative to traditional flour, it gives the bars a nice texture while keeping them keto-friendly.

Vanilla Extract

This aromatic addition enhances the overall flavor, making your bars taste indulgent and homemade.

Low-Carb Powdered Sweetener

Perfect for the icing, this sweetener ensures a smooth and sweet topping without the carbs.

Tips & Tricks

Use Room Temperature Ingredients

Bringing your eggs and butter to room temperature ensures a smoother batter that mixes well.

Don’t Overbake

Keep an eye on your bars towards the end of baking; they should be set in the center but still moist.

Cool Before Icing

Allow the bars to cool slightly before adding the icing to prevent it from melting into the bars.

Experiment with Flavors

Feel free to add a pinch of cinnamon or a dash of instant coffee to the batter for an interesting flavor twist.

Pro Tips

  • Be Mindful of Measurements: Accurate measurements are key, especially when it comes to sweeteners and flour.
  • Use Parchment Paper: Lining your baking pan with parchment makes it easy to lift the bars out once they’re cool.
  • Adjust Sweetness: Taste the icing and adjust the sweetness according to your preference before spreading it on the bars.
  • Cut Bars When Cold: For cleaner cuts, refrigerate the bars for a bit before slicing them into squares.

Step-by-Step Instructions

Prepare Your Baking Dish

Preheat your oven to 350°F (180°C) and line or grease a 9x9-inch baking pan to ensure easy removal.

Melt the Base Ingredients

In a small saucepan, melt the butter and 3/4 cup peanut butter over medium heat until smooth; let it cool slightly.

Mix the Dry Ingredients

In a large bowl, combine the low-carb brown sweetener, salt, and almond flour, mixing until lump-free.

Combine Wet and Dry Ingredients

Whisk in the vanilla and eggs, then pour in the melted butter-peanut butter mixture, stirring until a thick batter forms.

Bake and Ice

Spread the batter in the prepared pan and bake for 20-25 minutes. Once cooled, top with the peanut butter icing and let set before slicing.

Delicious Variations

Chocolate Drizzle

Melt some sugar-free chocolate and drizzle it over the top for a decadent addition.

Coconut Flakes

Sprinkle some unsweetened coconut flakes on top of the icing for added texture and flavor.

Nutty Crunch

Mix in some chopped nuts or seeds for an extra crunch in the bars themselves.

How to Store Keto Iced Peanut Butter Bars

Refrigerator

Store the bars in an airtight container in the refrigerator for up to one week.

Freezer

Wrap the bars individually and freeze for up to three months for a quick keto treat.

Reheating

Let them thaw in the fridge overnight before enjoying, or microwave for a few seconds if you prefer them warm.

Frequently Asked Questions

Can I use crunchy peanut butter?

Absolutely! Crunchy peanut butter will add a delightful texture to your bars.

Is almond flour necessary?

Almond flour is key for keeping this recipe low-carb; however, you can substitute with coconut flour if needed, but adjust the quantity.

Can I make these bars vegan?

Yes! Substitute the eggs with a flax egg or unsweetened applesauce to make it vegan-friendly.

How do I know when the bars are done baking?

The edges will be golden, and the center should be set but slightly firm to the touch.

Now that you have this delicious recipe at your fingertips, it's time to gather your ingredients and treat yourself to these irresistible Keto Iced Peanut Butter Bars. Share them with friends and family or keep them all to yourself—either way, you won't regret it!

Keto Iced Peanut Butter Bars: Low-Carb Dessert Recipe

Keto Iced Peanut Butter Bars: Low-Carb Dessert Recipe

Indulge in the rich, creamy delight of Keto Iced Peanut Butter Bars, a low-carb treat that captures the nostalgic flavors of childhood with every bite. These bars are soft, sweet, and topped with a luscious peanut butter icing, making them the perfect guilt-free dessert for any occasion.

15 min
Prep Time
30 min
Cook Time
12
Servings
275 kcal
Calories

Ingredients

Instructions

  1. 1 Preheat your oven to 350°F (180°C). Line or grease a 9x9-inch baking pan.
  2. 2 In a small saucepan, melt the butter and 3/4 cup peanut butter over medium heat. Stir until smooth, then remove from heat and let cool slightly.
  3. 3 In a large bowl, mix the sweetener, salt, and almond flour until evenly blended and lump-free.
  4. 4 Whisk in the vanilla and eggs, then pour in the melted butter-peanut butter mixture. Stir until you have a thick, cohesive batter.
  5. 5 Spread the batter evenly in the prepared pan. Bake for 20-25 minutes, or until the center is set and the edges are golden.
  6. 6 While the bars bake, melt 1/4 cup peanut butter in a small saucepan over low heat. Add almond milk and vanilla extract, stirring until smooth. Remove from heat, whisk in powdered sweetener, and adjust thickness with a splash more almond milk if needed.
  7. 7 Once baked, let the bars cool until warm (not hot). Pour the icing evenly over the top and spread with a spatula. Let it set for a few minutes before slicing into 12 squares.

Chef's Note

Store these bars in a covered container in the fridge for up to 5 days. For a nut-free version, substitute peanut butter with sunflower seed butter. These bars can also be frozen for longer storage.

Servings: 12

Cuisine: American

Course: Dessert

Nutrition (per serving): 8gg protein