These chocolate peanut butter oatmeal bars have a thick, soft peanut butter-oat base topped with a smooth layer of dark chocolate. Everything comes together without turning on the oven, then the bars chill until firm enough to slice into neat little squares.
I especially love the contrast between the sturdy, slightly chewy peanut butter layer and the thin chocolate top. The coconut oil keeps that chocolate layer smooth and easier to cut, while maple syrup adds just enough sweetness to the oat mixture.
If chocolate and peanut butter is your thing, try my Peanut Butter Stuffed Chocolate Cookies next. For another easy bar dessert, these Raspberry Jam Oat Bars are another favorite, while my Caramel Slice is perfect when you want something extra rich. And for the full chocolate situation, serve one with a mug of Homemade Hot Chocolate
Table of contents
Ingredients You Need
Let’s Make Chocolate Peanut Butter Oatmeal Bars
- Prep the pan. Line an 8-inch square pan (or similar) with parchment paper, leaving overhang so you can lift the bars out later.
- Make oat flour (optional). If using rolled oats but you want a smoother base, blend them into a fine flour.
- Mix the base. In a large bowl, combine peanut butter, rolled oats or oat flour, ground almonds, maple syrup, and a pinch of salt. Mix until thick and evenly combined.
- Press into the pan. Transfer the mixture to the lined pan and press firmly into an even layer (the tighter you press, the cleaner the slices).
- Melt the chocolate topping. Melt dark chocolate with coconut oil until smooth, then stir well.
- Top . Pour the melted chocolate over the base and spread into an even layer.
- Chill until fully set, then lift out and slice into bars.
The Peanut Butter + Chocolate Combo Is So Good Here
These bars sit somewhere between an oat bar, a peanut butter cup, and a no-bake dessert.
The base is thick enough to hold its shape but still soft when you bite into it, with a little texture from the oats and ground almonds. Then you get that cool, smooth dark chocolate layer on top.
And because they’re no-bake chocolate peanut butter bars, most of the work is just mixing, pressing, and chilling.
Exactly the kind of dessert I want when I don’t feel like baking.
Chocolate peanut butter bars arranged on a plate with smooth chocolate tops
Common Mistakes to Avoid
These chocolate peanut butter oatmeal bars are simple to make, but a few small details can make a big difference in the final texture.
- Not stirring the natural peanut butter first. Natural peanut butter can separate in the jar. Stir it thoroughly before measuring so the peanut butter layer has the right balance of oil and solids.
- Not pressing the base firmly enough. A loosely packed peanut butter-oat layer can crumble when you slice the bars. Use the bottom of a measuring cup or a flat spatula to press it firmly and evenly into the pan.
- Overheating the chocolate. Dark chocolate can become thick or scorched if it gets too hot. Melt it gently and stir frequently until smooth. King Arthur Baking recommends keeping the heat low and melting chocolate gradually for the smoothest result. King Arthur Baking’s guide to melting chocolate How to Melt Chocolate
- Getting water into the melted chocolate. Make sure your bowl and utensils are completely dry. Even a small amount of water can cause melted chocolate to seize and become grainy.
- Cutting the bars before they are fully chilled. Give the layers enough time to become firm before lifting them from the pan. Cutting too early can cause the peanut butter layer to lose its shape.
- Cutting them straight from a very cold fridge. If the chocolate topping cracks easily, let the bars sit at room temperature for about 5–10 minutes before slicing.
What to Serve With Chocolate Peanut Butter Oatmeal Bars
These bars are rich enough to serve completely on their own, but I especially like them with something simple to balance the chocolate and peanut butter.
A hot cup of coffee is one of my favorite pairings with these bars. Its slightly bitter flavor balances the rich peanut butter and dark chocolate without making the dessert feel too sweet. If you enjoy this combination, these Chocolate and Coffee Cupcakes from King Arthur Baking are another delicious example of chocolate and coffee together.
You can also serve these bars with:
- Hot coffee or espresso
- Black tea
- A cold glass of milk
- Fresh strawberries or raspberries
- A small spoonful of Greek yogurt for a less-sweet contrast
For a more indulgent dessert, I love serving one chilled bar alongside a mug of Homemade Hot Chocolate. The bars are also easy to cut into smaller squares for dessert trays, parties, or an afternoon coffee break.
FAQs
Yes. Use more oat flour (or finely blended oats). The bars will be a bit less rich but still slice well.
No—these are completely no-bake. The fridge does all the work.
Make sure the natural peanut butter is stirred well before measuring, then mix the base thoroughly and press it firmly into the pan. This helps the bars hold together and slice more cleanly once chilled.
Let the bars sit at room temperature for 5–10 minutes, then slice with a warm knife.
Chill the bars until the chocolate topping is completely set and the peanut butter-oat base is firm enough to slice cleanly. Once set, lift the bars out of the pan using the parchment paper and cut them into squares.
They can be—just use certified gluten-free oats.
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Chocolate Peanut Butter Oatmeal Bars
Ingredients
Equipment
Method
- Line an 8-inch square pan with parchment paper, leaving overhang for easy lifting.
- If using rolled oats and you want a smoother base, blend them into oat flour.
- In a bowl, mix peanut butter, rolled oats or oat flour, ground almonds, maple syrup, and a pinch of salt until fully combined.
- Press the mixture firmly into the prepared pan in an even layer.
- Melt the dark chocolate with the coconut oil until smooth, then stir well.
- Pour the melted chocolate over the base and spread evenly. Chill until set, then lift out and slice into bars.
Nutrition
Video
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