
These Chocolate Peanut Butter Marble Cookies perfectly blend rich chocolate with smooth peanut butter. Their unique swirled look makes them just as fun to see as they are to eat. They're great for any get-together and will make anyone with a sweet tooth very happy.
Why you'll love these cookies
The marbled treats mix the deep taste of chocolate with the sweet-salty kick of peanut butter, making a flavor combo you can't resist. They've got that melt-in-your-mouth middle with slightly crisp edges, making them perfect for snack breaks. Plus, you can whip them up pretty quickly without much fuss.
What you'll need
- Softened unsalted butter: 1/2 cup for that melt-in-your-mouth goodness.
- White sugar: 1/2 cup to add just the right sweetness.
- Packed brown sugar: 1/2 cup for that caramel-like flavor.
- Egg: 1 large, to hold everything together.
- Vanilla extract: 1 tsp, for that hint of flavor.
- All-purpose flour: 1 1/2 cups, gives the cookies their shape.
- Baking soda: 1/2 tsp, helps them rise just right.
- Salt: 1/4 tsp, brings out all the flavors.
- Cocoa powder: 1/2 cup, for that deep chocolate taste.
- Peanut butter: 1/2 cup, adds that creamy, can't-resist texture.
How to make amazing cookies
- Get your oven ready
- Turn your oven to 350°F (175°C) and line a baking sheet with some parchment paper.
- Mix your dough
- Beat butter with both sugars until it's fluffy and light. Add in the egg and vanilla. In another bowl, mix flour, baking soda and salt, then slowly add this dry mix to your wet ingredients until you've got smooth dough. Split it in half, mix cocoa into one part and peanut butter into the other.
- Shape your cookies
- Grab a spoonful of chocolate dough and a spoonful of peanut butter dough. Put them together and gently twist them to create that marble pattern. Place these swirled balls onto your lined baking sheet.
- Bake them up
- Pop them in the oven for about 10-12 minutes. You'll know they're done when the edges get firm but the middle still looks a bit soft. Let them cool on the sheet for a few minutes before moving them to a rack to cool completely.

Best ways to enjoy them
These cookies taste amazing when they're still warm - the peanut butter and chocolate get all melty in your mouth. You can keep them in an airtight container for about 5 days, or stick them in the freezer for later. They're really good with a glass of cold milk or a cup of hot tea.
Frequently Asked Questions
- → How do I get that marble effect?
- Don’t mix the two doughs too much. A couple of gentle turns will create nice swirls while keeping colors separate.
- → How do I know when they’re baked?
- The edges should feel slightly firm, but the centers should still be soft. They’ll firm up more as they cool on the tray.
- → Can crunchy peanut butter be used?
- Creamy peanut butter gives a smoother texture but crunchy adds a bit of crispness, which can be fun.
- → How long do these cookies stay fresh?
- They’ll last up to a week in an airtight container or up to 3 months in a freezer bag.
- → Can I make the dough ahead of time?
- Yes! Chill the dough in the fridge for up to 24 hours. Let it warm up a bit before shaping the cookies.