Recipe

No-Bake Peanut Butter Bars

Thick, chewy peanut butter bars with a crisp chocolate topping, made with simple pantry ingredients, an 8x8 pan, and zero baking.

By Matt Campbell

•

4.8

A stack of thick no-bake peanut butter bars with a glossy chocolate top layer on a white plate on a bright kitchen table

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These peanut butter bars are my kind of dessert: low drama, high reward, and dangerously easy to “just trim one more piece” while you pretend you are cleaning up. The base is sweet, salty, and a little chewy, then you get that clean snap of chocolate on top. It is basically a peanut butter cup that decided to become a slab.

No oven. No mixer. No complicated steps. Just stir, press, melt, chill, slice, and try not to hide the pan behind the broccoli like a cartoon villain.

Butter, graham cracker crumbs, powdered sugar, peanut butter, chocolate chips, and a pinch of salt arranged on a light kitchen counter in small bowls

Why It Works

Big peanut butter flavor thanks to a thick, buttery base that stays tender once chilled.
Chocolate that slices neatly with a little oil mixed in, which helps reduce cracking and shattering.
Pantry-friendly ingredients you can find at any normal grocery store, no specialty candy melts needed.
Make-ahead magic that tastes even better after a long chill, which is rare and beautiful.

Pairs Well With

Storage Tips

Refrigerator: Store bars in an airtight container for up to 7 days. For best texture and to avoid fridge odors sneaking in, keep them well covered and place parchment between layers so the chocolate tops stay pristine.

Freezer: Freeze sliced bars in a freezer-safe container for up to 2 months. Quality holds best when they are tightly wrapped. Thaw in the fridge overnight, or on the counter for about 20 to 30 minutes if you like them slightly firm and extra fudgy.

Serving tip: For the cleanest slices, serve chilled. For the softest peanut butter texture, let them sit at room temp for 10 minutes before eating.

Common Questions

Can I use natural peanut butter?

You can, but it is a little more unpredictable because oil separation can make the base either greasy or crumbly. For the easiest, most reliable bars, use a standard creamy peanut butter. If using natural, stir it extremely well and expect a slightly softer set.

Why did my chocolate layer crack when I sliced?

Usually the bars are too cold, or the chocolate is a bit too firm. Let the pan sit at room temp for 5 to 10 minutes before slicing, and include the teaspoon of oil (or coconut oil) in the topping, which helps reduce cracking. Use a long knife warmed under hot water, then wiped dry.

Why is my peanut butter base crumbly or too soft?

Crumbly: It usually just needs more pressing. Pack it down firmly with the bottom of a measuring cup. If it still will not hold, add 1 to 2 teaspoons of melted butter and mix again.
Too soft: Your butter may have been extra warm, or your peanut butter was very loose. Chill the base for 10 to 15 minutes before adding chocolate, and store the finished bars in the fridge so they stay sliceable.

Do I have to use graham cracker crumbs?

No. Crushed vanilla wafers or digestive biscuits work great. You can also use crushed pretzels for a salty twist, but start with a little less because pretzels pack tighter.

Can I make these gluten-free?

Yes. Swap in gluten-free graham-style crumbs or gluten-free cookies, and double-check your chocolate chips and powdered sugar if you are sensitive.

Can I make these in a 9x13-inch pan?

Yes. Double the recipe for thick bars similar to an 8x8 batch. If you keep the same amounts in a 9x13, they will be thinner and set faster.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

8x8-inch baking pan
Parchment paper (highly recommended)
Aluminum foil (backup option if you do not have parchment)
Nonstick spray or a little butter (if not using parchment)
Medium microwave-safe bowl
Rubber spatula or wooden spoon
Measuring cups and spoons
Small microwave-safe bowl for melting chocolate
Offset spatula or the back of a spoon (for smoothing)
Long knife (for clean slicing)

I started making peanut butter bars when I wanted a dessert that felt like I actually tried, without turning my kitchen into a floury crime scene. They hit that sweet spot between bake sale nostalgia and “adult me still wants dessert after dinner.” The best part is how forgiving they are. If the base looks a little crumbly, press it harder. If the chocolate looks streaky, give it a few more seconds and a stir. It is basically a choose-your-own-adventure, but the ending is always a pan of chocolate-peanut butter goodness.

No-Bake Peanut Butter Bars

(4.8 Reviews)

Prep Time 15 minutes

Cook Time 5 minutes

Total Time 2 hours 20 minutes

Servings 16 bars

Ingredients

1/2 cup (1 stick) unsalted butter, melted
1 cup creamy peanut butter
1/4 tsp fine salt
2 cups powdered sugar
1 1/2 cups graham cracker crumbs
1 1/2 cups semi-sweet chocolate chips
1 tsp neutral oil or coconut oil, for the chocolate topping

Optional, but fun: flaky salt for sprinkling, or 2 tbsp crushed peanuts on top.

Instructions

Prep the pan. Line an 8x8-inch pan with parchment paper, leaving a little overhang so you can lift the bars out later. No parchment? Line with foil and lightly grease it so nothing sticks.
Mix the peanut butter base. In a medium bowl, stir together the melted butter, peanut butter, and salt until smooth. Add the powdered sugar and graham cracker crumbs. Stir until you have a thick, cohesive mixture, kind of like sweet peanut butter sand that is ready to be pressed into place.
Press into the pan. Transfer the mixture to the lined pan and press firmly into an even layer. Use the bottom of a measuring cup or a flat glass to really pack it down so the bars slice clean.
Melt the chocolate topping. In a small microwave-safe bowl, microwave chocolate chips in 20 to 30 second bursts, stirring each time, until just melted (usually about 60 to 90 seconds total, depending on your microwave). Stir in the oil until glossy and smooth.
Top and smooth. Pour the melted chocolate over the peanut butter layer and smooth into an even sheet with a spoon or offset spatula. If using flaky salt or chopped peanuts, sprinkle them on now.
Chill to set. Refrigerate for at least 2 hours, or until the chocolate is firm and the base feels set.
Slice and serve. Lift the bars out using the parchment overhang. For clean cuts, let the slab sit at room temp for 5 to 10 minutes, then slice with a long knife warmed under hot water and wiped dry between cuts. For 16 bars, cut a 4x4 grid.