Peanut Butter Oatmeal Bars (No Bake!)

May 06, 2026

These no-bake peanut butter oatmeal bars are chewy, sweet and ready in just 15 minutes with only 5 wholesome ingredients. The optional chocolate drizzle makes them irresistible!

These peanut butter oatmeal bars are everything you want in a healthy treat: irresistible sweet peanut-y flavor, chewy texture, and a little drizzle of chocolate on top! These no bake oatmeal bars are like our famous bliss bite cookies, but easier and healthier (if that’s possible).

My family can’t get enough of them! My son Larson often asks with a sly smile if he can have an oatmeal bar: and I’m happy to indulge him. This sweet treat optimizes whole grain oats while hitting it big in the sweet, salty and satisfying department.

5 Star Reader Review

“These bars were so good that I almost finished them before even putting them on the pan . Thank you so much for this recipe, it flipped my day around for sure.” -Tony

Ingredients for Peanut Butter Oatmeal Bars

There are only 5 ingredients you’ll need for these peanut butter oatmeal bars…and two are in the recipe title! That’s the ultimate easy recipe, right there. I love these no bake oatmeal bars for treats, but they’re also great for snacks since they’re mostly just whole grain oats.

For breakfast bars, I prefer our straight up Oatmeal Bars: but you could also eat these for breakfast as well. Here’s what you’ll need for these babies:

Old Fashioned rolled oats: Use plain old oats here: not steel cut or instant oats!
Peanut butter: I like natural peanut butter with no added sugar or salt, but use your favorite brand.
Honey: Honey has the best warm flavor and sticky texture. See below for a few vegan options!
Cinnamon: This spice adds just the right nuance.
Dark chocolate: All you need is a 1 ounce of dark chocolate! Just the small amount of chocolate adds a great punch, but still keeps the treats on the healthy side: it’s just 8 calories per bar.

How to Make Peanut Butter Oatmeal Bars

The process is very simple; in fact, it’s a spin on my popular 4-ingredient oatmeal bars:

Mix the peanut butter, honey, oats, salt, and cinnamon until a sticky dough forms.
Line a 9×9″ pan with parchment paper and press the mixture into an even layer. Roll a small glass over the top to get it smooth and flat.
Freeze for 10 minutes to set.
Lift out using the parchment paper and cut into 20 rectangles (4 rows x 5 columns).
Melt the dark chocolate in short microwave bursts (about 10 seconds at a time, stirring between each), then drizzle over the bars. Allow to set before serving — I like refrigerating for 1 hour before eating, but you can enjoy right away.

Tip: If you want to know my tricks for melting chocolate in the microwave without seizing it up, that technique post breaks it all down step by step.

Cutting & Serving Options

Serving size is helpful if you’re looking at making a healthy dessert. These peanut butter oatmeal bars have two size options depending on what you’re looking for:

Cut them into 20 bars, 4 x 5-inches. I like small rectangles vs the standard large squares you get if you simply divide a 9 x 9 pan evenly into 16. Call me crazy, but it’s more fun to eat this size!
Or go smaller: cut those in half to make 40 bars! Love curbing a sweets craving with a little morsel? Go for 40 small bars: they’re perfect for little nibbles.

Making Them Vegan

Want to make vegan peanut butter oatmeal bars instead? The honey in this recipe is important for creating a nuanced, warm flavor and the sticky texture. Typically I use maple syrup as a vegan sweetener, but it doesn’t have quite the same texture and sweetness here.

I recommend using agave syrup: it’s slightly stickier than maple and should help the bars hold together better. But you can use maple syrup if it’s all you have!

Storage Info

These peanut butter oatmeal bars are the perfect treat to throw in the fridge and gobble up on moments notice! They keep very well in the fridge or freezer; here’s what to know:

Store in the fridge for up to 2 weeks. If you do the drizzle, wait for it to dry, then place wax paper between the layers. Or just don’t care and stack them, like we do!
Store in the freezer for up to 3 months. They also freeze well…and honestly taste great popped out of the freezer too.

Dietary Notes

This peanut butter oatmeal bars recipe is vegetarian, dairy-free and gluten-free. For vegan and plant-based, see the notes above.