Chewy Peanut Butter Oatmeal Bars Recipe

May 7, 2025

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Should you’re in search of a simple, chewy, and oh-so-delicious snack, these Peanut Butter Oatmeal Crumble Bars are the reply! Filled with the nutty goodness of peanut butter, hearty rolled oats, and a golden crumble topping, they’re the proper deal with!

A piece of peanut butter and oat slice in front of a jar of peanut butter.

Whether or not you want a fast lunchbox filler, an afternoon pick-me-up, or a post-dinner snack together with your cuppa, these crumble bars hit the spot each time. Plus, they’re made with easy pantry elements, so you possibly can whip up a batch each time the craving strikes!

On the lookout for extra peanut butter recipes?

Attempt my peanut butter brownies (so decadent!), no bake peanut butter slice, 3 ingredient microwave peanut butter fudge or my Reese’s peanut butter cookies!

Soar to:

A piece of peanut butter slice with a crunchy oat topping.

Why You’ll Love This Recipe

✔ Tremendous Simple – Simply combine, press, bake, and luxuriate in—no fancy methods required!
✔ Nutritious & Filling – Made with rolled oats, peanut butter, and pantry staples for a satisfying, energy-boosting snack the entire household will love.
✔ Nice for Lunchboxes – These bars are kid-friendly, school-approved (simply swap for a nut-free butter if wanted), and don’t want refrigeration.
✔ Customisable – Add chocolate chips, nuts, or dried fruit to make them your personal.
✔ Comfortable & Chewy Texture – A deliciously crumbly base, a easy peanut butter layer, and a golden oat topping!

What You Want

These oatmeal peanut butter bars come collectively so nicely with simply a handful of easy elements:

Be aware: Scroll to the recipe card on the backside for the elements portions and full detailed technique.

The ingredients for peanut butter oatmeal slice.

Plain Flour – Also called all goal flour.
Rolled Oats – Provides chewiness and texture (additionally known as old style oats).
Salt – Only a pinch balances the sweetness.
Bicarbonate of Soda (Baking Soda) – Helps with texture and lightness.
Uncooked Sugar & Gentle Brown Sugar – The proper mixture for a golden, caramel-like flavour.
Butter – Melted butter binds the crumble combination and provides richness.
Vanilla Extract – Enhances the flavour.
Peanut Butter – The star ingredient! Use easy and creamy peanut butter or crunchy peanut butter, relying in your particular person choice.

Tools Required

Giant bowl and medium bowl – For combining elements.
Measuring cups and spoons – To make sure correct measurements.
20cm sq. cake tin – The proper dimension for these bars.
Baking paper/parchment paper – To line the tin and make eradicating the bars simple.
Whisk, spoon and spatula – For mixing elements, and to unfold the peanut butter evenly.
Oven – Preheated to 160°C (fan-forced).
Sharp serrated knife – For reducing the bars cleanly after they’ve cooled.

Step-By-Step Directions

Let’s make peanut butter oat bars!

Be aware: Scroll to the recipe card on the backside for the elements portions and full detailed technique.

Step 1: Preheat & Put together The Tin

Preheat your oven to 160°C (fan-forced). Line a 20cm sq. cake tin with baking paper, ensuring to depart some overhanging edges for straightforward elimination later.

Step 2: Mix The Dry Substances

In a big mixing bowl, whisk collectively the plain flour, rolled oats, salt, and bi-carbonate of soda. Stir within the uncooked sugar and brown sugar, guaranteeing all the things is nicely mixed.

Step 3: Combine In The Moist Substances

Pour the melted butter and vanilla extract into the oat combination, stirring till all the things is evenly coated and comes collectively right into a crumbly texture.

Step 4: Bake The Base

Take simply over half of the crumble combination and press it firmly into the bottom of your ready tin, smoothing it out evenly with the again of a spoon.

Bake for 10-Quarter-hour, or till frivolously golden. Take away from the oven and let it cool barely, however maintain the oven on.

Step 5: Unfold The Peanut Butter

As soon as the bottom has cooled slightly, unfold a layer of ½ to ¾ cup of peanut butter evenly throughout the floor.

Use ½ cup for a thinner layer or go for ¾ cup when you love that additional nutty flavour.

Step 6: Add Crumble Topping & Bake Once more

Sprinkle the remaining crumble combination over the peanut butter, ensuring to cowl it evenly.

A square baking tin with crumble on top.

Return to the oven and bake for 20-25 minutes, or till the topping turns a beautiful golden brown color.

Step 7: Cool, Refrigerate & Slice

As soon as baked, let the slice cool fully. For greatest outcomes, cowl and refrigerate for at the very least 2 hours (in a single day is even higher). This helps the bars set correctly for clear slicing. Use a sharp serrated knife to chop into squares earlier than serving.

Oatmeal peanut butter slices on a chopping board.

Ideas For The Finest Peanut Butter Oatmeal Crumble Bars

✔ Permit the bottom to chill barely earlier than including peanut butter. This makes it a lot simpler to unfold.
✔ Press the bottom firmly. This helps the slice maintain collectively.
✔ Refrigerate earlier than slicing. The bars will set correctly and slice cleanly.
✔ If the crumble is browning too shortly, cowl with foil and proceed baking.
✔ Get pleasure from heat or chilly! Serve with ice cream, custard, or cream for a dessert-style deal with.

Variations

This oatmeal bar recipe is so versatile! Here is just a few of my fave variations:

🔹 Nut-Free Model: Swap peanut butter for sunflower seed butter or tahini for a school-friendly various.
🔹 Chocolate Peanut Butter Bars: Stir via ½ cup of standard chocolate chips or chunks of chopped darkish chocolate into the crumble combination.
🔹 Coconut & Peanut Butter Bars: Add ½ cup of shredded coconut to the bottom for additional chewiness.
🔹 Fruit & Nut Bars: For a more healthy model, combine in dried cranberries, chia seeds, sultanas, flax seed, or chopped nuts for added texture and flavour.

A piece of triple layered peanut butter oat bar.

Storage & Freezing

Fridge – For the most effective texture, retailer in an hermetic container within the fridge for as much as 1 week. Storing the slice at room temperature will make it lose it is crunchy crumble on prime.
Freezer – Freeze in an hermetic container for as much as 3 months. Permit to defrost within the fridge earlier than serving.

FAQS

Can I take advantage of fast oats as a substitute of rolled oats?

Whereas you should use fast cooking oats if thats what you will have available, rolled oats will present a chewier texture.

Can I make these gluten-free?

Sure! Simply swap the plain flour for gluten-free flour and guarantee your oats are licensed gluten-free.

Can I take advantage of pure peanut butter?

Completely! Simply remember that pure peanut butter is runnier and fewer candy, so it’s possible you’ll want to regulate the sugar barely.

Are these bars tender or crunchy?

These peanut butter oatmeal crumble bars have a tender, chewy base, a easy peanut butter layer, and a golden, crumbly topping—completely scrumptious!

Extra Oat Recipes You’ll Love

Should you love these peanut butter oatmeal crumble bars, attempt these subsequent:

These Peanut Butter Oatmeal Crumble Bars are the proper deal with—healthful, satisfying, and completely scrumptious! Bake a batch as we speak and luxuriate in them as a snack, brekkie on the go, or a candy little deal with together with your cuppa.

Let me know when you give them a attempt – I’d love to listen to what you assume!

Get pleasure from! xx

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Peanut Butter Oatmeal Bars

The proper recipe for peanut butter lovers! Crunchy oat base and topping crammed with candy and creamy peanut butter!

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Course: Dessert, sweets

Delicacies: Slices

Prep Time: 10 minutes

Prepare dinner Time: 35 minutes

Whole Time: 45 minutes

Servings: 20 serves

Energy: 151kcal

Writer: Lucy – Bake Play Smile

Prepare dinner ModeStop your display from going darkish

Directions

Preheat oven to 160 levels celsius (fan-forced).Grease and line a 20cm sq. cake tin with baking paper, permitting the sides to overhang.
In a big bowl, whisk collectively the plain flour, rolled oats, salt and bi-carbonate of soda. Stir within the uncooked sugar and brown sugar and blend till easy.
Add the vanilla extract and melted butter to the dry elements. Stir combination till nicely mixed.If utilizing a Thermomix: Soften the butter and vanilla extract for 3 minutes, Velocity 2, 80 levels. Add the plain flour, rolled oats, salt, bi-carbonate of soda, brown sugar and uncooked sugar. Combine for 20 seconds on Reverse, Velocity 2. Scrape down the perimeters. Combine for an additional 20 seconds on Reverse, Velocity 2.
Press simply over half of the crumble combination into the bottom of the ready tin and use the again of a spoon to easy the combination into a fair layer. Bake within the preheated oven for Quarter-hour, till golden.Take away from oven and put aside to chill barely (depart the oven turned on).
Unfold the peanut butter excessive of the cooked base. Use ½ cup peanut butter for a skinny layer or ¾ cup for a barely thicker layer (the extra the higher in my view!)
Sprinkle the remaining crumble combination excessive of the peanut butter.
Bake within the oven for 20 – 25 minutes or till frivolously golden.Take away from oven and permit to chill.
Cowl and refrigerate for at the very least 2 hours (ideally in a single day) then take it out and minimize into squares.

Notes

RECIPE NOTES & TIPS:
VARIATIONS:

Swap the peanut butter for sunflower seed butter or tahini for a nut free possibility.
Add some chocolate chips or chunks of chopped darkish chocolate to the crumble topping combination.
Add some shredded coconut, dried cranberries, sultanas or chopped nuts to the crumble topping earlier than baking.

OTHER RECIPE TIPS:

All ovens are totally different – The slice is prepared when the crumble is golden. I specify levels celsius (fan-forced) for my recipes. Should you’re utilizing a traditional oven, improve the temperature by 10-20 levels celsius.
Should you discover that your crumble is over-browning, merely add a sheet of foil loosely excessive and proceed baking.
Permit the bottom to chill barely earlier than including the peanut butter (it will make it simpler to unfold).
Refrigerate earlier than slicing, then minimize the slice utilizing a sharp serrated knife.
This crumble slice is scrumptious served cool or warmed up with a scoop of ice-cream, custard or cream.
Retailer the slice in an hermetic container within the fridge for as much as one week.
Freeze the slice in an hermetic container for as much as 3 months. Permit to defrost within the fridge earlier than consuming.

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