These simple 3 Ingredient No Bake Peanut Butter Oat Squares can be thrown together in minutes. Use all natural/organic ingredients, if you prefer, for a healthier version! Either way, this oatmeal bar recipe is easy, delicious, and the best snack or dessert.

This recipe was originally posted in 2015. The images and recipe have been updated in 2021 to include tips and tricks based on reader feedback!
These 3 Ingredient No Bake Oat Squares Are Easy and Delicious!
Easy can not even describe these 3 Ingredient No Bake Oat Bars! I would say they’re simple to make, but “simple” is so over-used…by me especially…that I’m afraid you might not buy it. Regardless, they are the simplest, easiest, no brainiest bars ever to be.
There are literally 3 ingredients, no baking…only measuring. And you only have to measure 3 things, so…
PLUS, these Oat Bars are kinda-sorta not even that bad for you!
Oat Squares Quick and Healthy Snack Idea!
I know the word healthy is extremely overused, but the simplicity of the ingredients, plus the fiber and protein these contain make them a more healthful option in my house than a cookie. They’re a great option to have on hand for a snack or even a grab and go breakfast!

What Are the 3 Ingredients You Need?
- Old Fashioned Oats
- Peanut Butter
- Honey

Add-In Ideas:
The great thing abut this recipe is that while they are perfect in their 3 ingredient simplicity, you can also add in other ingredients for flavor or health benefits.
- Flax seeds. A tablespoon or two will add fiber, protein, and omega-3 fatty acids.
- Coconut. 1/4 cup or so will add texture, flavor, and sweetness!
- Chocolate Chips. Peanut butter and chocolate are the perfect combo!
- Crunchy Peanut Butter. This will add texture when swapped out for creamy!
- Raisins or dried fruit. 1/2 cup would be delicious!
- Chia seeds. a few tablespoons will add high quality protein and antioxidants.

Tips for Making No Bake Peanut Butter Oat Squares
- If your honey isn’t brand new it might be a little crystallized, which makes it hard to pour. BUT heating honey weakens the ingredients rendering the health benefits ineffective…so if you’re just in it for the taste you can heat it a bit. But if you’re looking for the good stuff that comes along with honey, heating it might not be the option.
- Use Old Fashioned (or rolled oats). I find that they work for the texture and stability of these bars a little better. If you only have Quick oats on-hand, it will be fine, it’s just a texture thing.
- Use whatever kind of peanut butter you prefer! If you love Skippy, use it! If you like natural peanut butter, use that! It’s completely up to you!

Do You Need To Chill These Oatmeal Bars?
Chilling these bars is part of the process to aid in them setting and becoming firm. But do you need to store them int he refrigerator? You can! If you want your bars to stay extra firm, keep them chilled! If you allow them to come up to room temperature they will be softer, but also delicious!
Looking For More Oatmeal Bar Recipes? Try These!
- Salty Caramel Oat Bars
- Homemade Granola Bars
- Peanut Butter Passion Bars
- Salty Chocolate Chip Oatmeal Bars

3 Ingredient No Bake Peanut Butter Oat Squares
- Prep Time: 5 minutes
- Cook Time: 5 minutes
- Total Time: 10 minutes
- Yield: 20 squares 1x
- Category: Snack
- Method: Stovetop
- Cuisine: American
Description
These simple 3 Ingredient No Bake Peanut Butter Oat Squares can be thrown together in minutes. Use all natural/organic ingredients, if you prefer, for a healthier version! Either way, this oatmeal bar recipe is easy, delicious, and the best snack or dessert.
Ingredients
- 1 cup creamy peanut butter
- 1/2 cup honey
- 2 3/4 cups rolled oats
Instructions
- Line an 8×8 pan with foil. Spray lightly with non-stick spray.
- Melt the peanut butter and honey together until smooth, either in the microwave or stove top. Combine mixture with oats.
- Press into prepared pan. Place in refrigerator until set. Cut into squares.
Notes
I like to store mine in the refrigerator because they can get a bit soft.
Nutrition
- Serving Size: 1 square
- Calories: 148
- Sugar: 8.3 g
- Sodium: 55.3 mg
- Fat: 6.6 g
- Carbohydrates: 18 g
- Protein: 4.4 g
- Cholesterol: 0 mg
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I used almond butter, oats, a little flax meal, local honey with its pollen and vanilla. Great to have on hand instead of sweets
i love this recipe and so does my son, i added sunflower seeds and almonds flakes and they tasted yum, thanks for putting this up. im going to use this again and again but next try with crunchy peanut butter
I put in some chia seeds!
saw these on dr oz. i use crunchy peanut butter and litte fruit juice/equal as i don’t like honey.the main prob i have it that they are not really low cal food and i just keep going back to the frig. lol
Thoughts on using crunching peanut butter? It’s all I keep here cause I like the texture better
Oh yes definitely try crunchy!
Thank you for this simple recipe! I used crunchy peanut butter and they are delicous!!
made them as drop cookies with low fat pb — very easy and quick. I halved the recipe too. Could be used with rice crispies too instead of oats
I made these earlier today, and I have to say that they are great! I didn’t have quite enough peanut butter so I compensated by using a bit more honey than the recipe called for. I also added melted semi sweet chocolate on top before I put the pan in the fridge. I think next time I will use only 2.5 cups of oatmeal. Also, I am going to try cutting the squares before I put the pan in the fridge, as I found it difficult to do once the mixture had already set. Thanks for the easiest snack recipe ever :)!
Used crunchy peanut butter, brown sugar and a bit of water to keep them from being too dry. They taste like peanut butter fudge… awesome!
Great recipe, especially when you don’t want to turn on the oven. Great variation is to pretoast the oats in the oven or in a skillet before you use them, really brings out the flavor.
Love that idea!