This peanut butter granola bar recipe is delightfully simple. These no-bake bars use just a few wholesome ingredients and have the sweet, nutty flavor of honey-roasted peanuts—without any honey.
Peanut Butter Granola Bars
I wanted to take a classic snack and make it faster and cleaner—less fuss, fewer ingredients, and still delicious. The result is these easy peanut butter granola bars: no baking required, vegan-friendly, naturally gluten-free when you use certified oats, and ready in minutes.
They’re perfect for packed lunches, an afternoon pick-me-up, or a simple homemade snack to keep on hand. The texture is pleasantly dense and chewy, and the flavor is unmistakably peanut-forward with a caramel-like sweetness from pure maple syrup.
3 Ingredient No Bake Peanut Butter Granola Bars
This recipe keeps things intentionally simple. You only need three main ingredients:
- Peanut butter (smooth)
- Rolled oats (use gluten-free oats if necessary)
- Pure maple syrup
How to Make Peanut Butter Granola Bars
Follow these straightforward steps to make chewy, satisfying granola bars with minimal effort. The method is quick and forgiving, so it’s great for cooks of any level.
Line a baking pan
Line an 8-inch square baking pan with parchment or wax paper and set it aside. If you own a granola bar pan, you can use that instead—just place it on a small baking sheet for stability.
Make the peanut butter mixture
In a microwave-safe bowl, combine smooth peanut butter and pure maple syrup. Whisk until fully combined. Warm the mixture gently—either in short microwave bursts (stirring between each) or over low heat on the stove—until it’s warm and just beginning to form tiny bubbles. This warming helps the syrup and peanut butter blend together to form the binding “glue” for the bars.
Heat until warm
Heat just until warm and fragrant; you’re not cooking to a specific candy stage. A few rounds of 20–30 seconds in the microwave usually do the trick. On the stovetop, heat over medium-low while whisking until small bubbles appear, then remove from heat.
Add oats
Pour the rolled oats into the warm peanut butter and maple mixture. Fold them together with a rubber spatula until all the oats are coated and the mixture forms a cohesive dough. The texture should be thick and sticky, not runny.
The mixture will look dense and slightly glossy—perfect for pressing into a pan.
Pour granola bar mixture into the pan
Transfer the oat-and-peanut mixture into the lined pan. Use the spatula (or the back of a spoon) to press it down firmly and evenly into a tightly packed layer. If you’re using a granola bar pan, press the mixture into each cavity so the bars hold their shape.
Chill, Slice, and Enjoy!
Place the pan in the freezer for about 25–35 minutes, or until the mixture is firm and completely chilled. Remove, slice into bars (18 pieces works well), and serve. The bars are ready to eat immediately but will be firmer after an hour at room temperature or in the fridge.
TL;DR: Homemade Peanut Butter Granola Bars
These 3-ingredient no-bake peanut butter granola bars are:
- Quick and easy to prepare, ready in under 20 minutes
- Chewy, firm, and satisfyingly thick
- Made with just peanut butter, oats, and maple syrup
- Nutty and sweet, with the flavor of honey-roasted peanuts without using honey
- Adaptable: use gluten-free oats to keep them GF and any natural peanut butter you prefer
Sending you lots of love…
I love sharing simple, homemade treats that brighten your day. If you try these bars, leave a comment to share how they turned out. Your feedback helps other home cooks and keeps small recipe projects like this going.
Warmly, xo Demeter ❤️
Ingredients
- 1 cup smooth peanut butter
- ½ cup pure maple syrup
- 2½ cups rolled oats (use gluten-free oats if needed)
Instructions
- Line an 8-inch square pan with parchment and set aside.
- In a microwave-safe bowl, whisk peanut butter and maple syrup until combined. Warm in short bursts, stirring between, until the mixture is warm and small bubbles form. (Alternatively, warm over medium-low heat in a saucepan, stirring until bubbly.)
- Add oats and fold until evenly coated and a thick dough forms.
- Press the mixture firmly into the prepared pan, smoothing the top.
- Freeze for 25–35 minutes, or until firm. Slice into 18 bars and enjoy. Store in an airtight container—room temperature or refrigerated—for up to one month.
Notes
Stovetop warming works well for those who prefer not to use a microwave. Heating just until small bubbles appear is enough to bind the ingredients; overcooking is unnecessary. Bars will firm up further after they chill; if you prefer a very firm bar, refrigerate for a couple of hours before slicing.
Nutrition (approximate per bar)
Serving: 1 bar — Calories: 154 kcal — Carbohydrates: 17 g — Protein: 5 g — Fat: 8 g — Sugar: 7 g. Nutrition values are estimates based on the ingredients and yield of 18 bars.
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