These Baked Triple Peanut Butter Oatmeal Bars are soft, chewy, and SO delicious with triple the peanut butter flavor. Even better these easy peanut butter oatmeal bars are made with simple ingredients and bake in less than 30 minutes time!

This Triple Peanut Butter Oatmeal Bars recipe post is sponsored by the National Peanut Board. I received compensation, but all opinions and content are 100% my own.

Triple Peanut Butter Oatmeal Bars

Calling all peanut butter lovers!

Today I’m so excited to be sharing the most yummy peanut butter oatmeal bars recipe with you that are simply the perfect choice to make whenever you’re craving a peanut butter dessert.

My Triple Peanut Butter Oatmeal Bars are thick, soft, chewy, and absolutely delicious! And with triple the peanut butter flavor, you won’t be able to resist eating one.

Even better, my chewy peanut butter oatmeal bars are made with simple, everyday ingredients you probably already have in your pantry and can be made in less than 30 minutes time.

If you want to learn how to make my delicious and easy peanut butter oatmeal bars, then keep reading and check out my step by step video tutorial over here.

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Triple Peanut Butter Oatmeal Bars

True story: almost every time I make a dessert at my house both the kids and the husband always put in a request for one thing to be in it – peanut butter.

I don’t know about your family, but peanut butter is a total staple in our pantry and we seriously can’t get enough!

From Apple Peanut Butter French Toast Roll Ups at breakfast, to basic PB&J’s at lunch, to easy treats and snacks like these peanut butter bars, Chewy Peanut Butter Cookies, Peanut Butter Cheesecake Brownies, No Bake Peanut Butter Pudding Pie, and so many more – we’re total peanut butter lovers.

Beyond it’s amazing flavor, I also love that it’s an affordable, nutritious, and delicious ingredient for my family.

Did you know that there are eight powerful grams of protein, two grams of filling fiber, and 12 grams of unsaturated fat in each two-tablespoon serving? Pretty awesome, right?!

Reasons You’ll Love Triple Peanut Butter Oatmeal Bars

If you love peanut butter as much as our family, then you’ll totally love my Triple Peanut Butter Oatmeal Bars Recipe for 3 main reasons:

1. They’re Incredibly Delicious
2. They’re Incredibly Easy to Make
3. They’re Versatile and Great for Gatherings w/ Family and Friends

These soft peanut butter oatmeal bars taste almost like an oatmeal cookie but come alive with the addition of peanut butter in the batter.

But the peanut butter fun of course doesn’t stop there.

These baked peanut butter oatmeal bars also feature a tasty peanut butter + brown sugar streusel that’s sprinkled and baked to golden perfection on top.

Lastly, these chewy peanut butter oatmeal bars are topped with a delicious, creamy peanut butter drizzle frosting that creates both a beautiful presentation and adds a light sweetness.

Tips for Making Peanut Butter Oatmeal Bars

• Use regular, creamy peanut butter like Jif. This will give it the best flavor and texture, vs. using a natural peanut butter.
• Line your pan with parchment paper so that you can easily lift your bars out and cut them.
• Use a decorators bag or Ziploc bag with the corner snipped off the corner to drizzle on your peanut butter icing.

Peanut Butter Oatmeal Bars FAQ’s

Can I use quick oats instead of old fashioned rolled oats?

Yes, you can use either type of oats, and it’s really personal preference.

I originally used to make this recipe with quick oats, which make them chewier, but now prefer the softer texture that old fashioned oats give it.

How to store leftover Peanut Butter Oatmeal Bars

Leftover peanut butter oat bars should be stored in an airtight container at room temperature.

These peanut butter bars will remain fresh for up to 5 days.

Can you freeze Peanut Butter Oatmeal Bars?

Yes, these bars freeze up nicely for up to 3 months.

I recommend freezing cut, cooled bars without the peanut butter drizzle on top in a freezer safe bag or container.

Once ready to eat, thaw on the counter, or re-heat in the microwave for 20 seconds at a time until warm. If desired, top with the PB drizzle and enjoy!

Peanut Butter Oatmeal Bars Variations:

Wanna switch up the flavors or make these peanut butter oatmeal bars more healthy? Try one of my delicious variations or substitution ideas below!

• For a healthier version, try replacing half of the butter with unsweetened applesauce and/or using a lower sugar peanut butter.
• Love chocolate? Feel free to add chocolate chips on top of the peanut butter streusel or replace the peanut butter drizzle with a chocolate drizzle instead.
• Give them a fall flavor by adding ½ tsp pumpkin pie spice or ½ tsp cinnamon.

How to Make Chewy Peanut Butter Oatmeal Bars (Step-by-Step Recipe)

Ingredients Needed for Peanut Butter Bars:

• unsalted butter
• granulated sugar
• light brown sugar
• large egg
• vanilla extract
• creamy peanut butter
• self-rising flour
• old fashioned oats
• powdered sugar
• milk

KITCHEN TOOLS NEEDED:

• Electric Hand Mixer
• Glass Mixing Bowls
• 8×8 Glass Baking Dish
• Whisk
• Rubber Spatula
• Measuring Cups
• Measuring Spoons
• Pre-Cut Parchment Paper
• Icing Decorator Bag

Step 1:

To create the peanut butter oatmeal bars, start by mixing together the butter and sugars in a large mixing bowl using an electric hand mixer.

Mix until creamy and combined and then add in the egg, peanut butter, and vanilla.

Step 2:

After that evenly fold in the oats by hand, then gently mix in the flour until just combined. Don’t overmix.

Next press the oat mixture into an 8×8 glass baking dish that has been lined with parchment paper or sprayed with non-stick cooking spray.

I highly recommend using parchment paper since this makes it easy to lift the bars out of the pan and makes it mess-free when cutting the bars.

Make sure you press the bars into all four corners of the pan.

Step 3: 

Next you’re going to create your peanut butter streusel using brown sugar, flour, peanut butter, and butter.

Mix together until a crumbly consistency forms, then sprinkle evenly on top of the peanut butter oatmeal bars.

Step 4: 

Place the bars in a 350 degree F preheated oven and bake for 25-28 minutes, or until the bars are lightly golden. 

While the bars are baking, whisk together your peanut butter drizzle in a bowl by combining powdered sugar, peanut butter, and milk.

Although the recipe calls for 1-3 tbsp of milk, you may have to add more or less milk depending on the weather and other variables.

I recommend adding 1/2 tbsp at a time, whisk together, and continue adding as needed until a light drizzle is reached.

Step 5: 

Once the bars are fully cooked, remove from the oven and let cool for 15-30 minutes.

Once cooled, it’s time to add that yummy peanut butter drizzle on top.

You can use a spoon to drizzle it on, or to make it easier (and less messy) I prefer using an icing bag or Ziploc bag with the corner snipped off to drizzle it on.

Step 6: 

Let the bars set for 10 minutes, then cut, and enjoy!

Tip: If you use parchment paper, you can easily lift your bars out of the pan and onto a cutting board for quick + easy cutting.

I mean, do these peanut butter oatmeal bars not look amazing?! Just look at all that peanut butter deliciousness!

I also love how the peanut butter drizzle make the peanut butter oatmeal squares look so pretty and decadent, and trust me when I say your family and friends will absolutely LOVE these baked peanut butter oatmeal bars.

Triple Peanut Butter Oatmeal Bars Recipe + Video

Triple Peanut Butter Oatmeal Bars

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Baked triple peanut butter oatmeal bars are thick, soft, chewy, and delicious with triple the peanut butter flavor! Easy to make in just 30 minutes time!

• Author: Cara Owens
• Prep Time: 5 minutes
• Cook Time: 25 minutes
• Total Time: 30 minutes
• Yield: 16-20 bars 1x
• Category: Dessert
• Method: Oven
• Cuisine: American

Ingredients

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Peanut Butter Oatmeal Bars

• 1/2 cup unsalted butter (softened to room temperature)
• 1/4 cup granulated sugar
• 1/3 cup light brown sugar (packed)
• 1 large egg
• 1/2 tsp vanilla extract
• 1/3 cup creamy peanut butter
• 1 cup self-rising flour (can also substitute all-purpose flour, just add 1/4 tsp salt and 1/2 tsp baking soda)
• 1 cup old fashioned oats (or quick oats)

Peanut Butter Streusel

• 1/4 cup self rising flour
• 1/4 cup light brown sugar (packed)
• 2 tbsp unsalted butter (softened to room temperature)
• 1 1/2 tbsp peanut butter

Peanut Butter Drizzle

• 1/3 cup powdered sugar
• 1/4 cup peanut butter
• 1–3 tbsp milk (add 1 at a time, and additional milk may be added until drizzle consistency is reached)

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Instructions

Peanut Butter Oatmeal Bars

1. Preheat the oven to 350 degrees F and line an 8×8 baking dish with parchment paper or spray with non-stick cooking spray.
2. First use an electric hand mixer and cream together butter, sugar, and brown sugar until combined. Add the egg, peanut butter, and vanilla, and mix until well combined.
3. Next stir in the oats by hand until evenly incorporated. Lastly, stir in the flour by hand until just combined, being careful to not overmix.
4. Spread batter in a prepared 8×8 baking pan.

Peanut Butter Streusel

1. In a small mixing bowl, combine the flour, brown sugar, peanut butter, and softened butter to make the streusel. Mix until a crumbly consistency is reached, but do not overmix. Sprinkle evenly over top the peanut butter oatmeal bars batter.
2. Bake at 350 degrees for 25-28 minutes until bars are lightly golden.
3. Remove bars from oven and let cool for 15-30 minutes before adding the peanut butter drizzle over the bars.

Peanut Butter Drizzle

1. While the peanut butter oatmeal bars are baking, use a whisk and combine powdered sugar, peanut butter, and milk in a small bowl. Add milk in 1/2 tbsp at a time until a drizzling consistency is reached. Place in the fridge until ready to use.
2. For an easy mess-free drizzle, place peanut butter drizzle in a decorator’s bag or Ziploc bag with the corner snipped off, and drizzle as desired.
3. Let bars set for 10 minutes before cutting, then serve and enjoy!
4. Store remaining peanut butter oatmeal bars in an airtight container at room temperature for up to 5 days.

More Peanut Butter Desserts You’ll Love:

• Soft & Chewy Peanut Butter Cookies
• Peanut Butter Chocolate Chip Bars
• Peanut Butter Cheesecake Swirl Brownies
• Peanut Butter Crumb Apple Pie
• No Bake Peanut Butter Pudding Pie

I hope you enjoyed today’s recipe for my Triple Peanut Butter Oatmeal Bars and that you’ll try making these the next time you get a peanut butter craving.

What do you think of my Triple Peanut Butter Oatmeal Bars? Do you know a peanut butter lover who’d love these? Let me know in the comments below!

Thanks for stopping by! – Cara

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