These peanut butter rice krispie treats are extra chewy, a little salty-sweet, and made with just 4 ingredients in about 15 minutes. Even better than the original!

Stack of peanut butter rice krispie treats on metal rack.

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Easy Rice Krispie Treats with Peanut Butter

These peanut butter rice krispie treats take the best rice krispie treats recipe and add a creamy, nutty peanut butter making them even chewier and more addictive. Just 4 ingredients and about 15 minutes of hands-on time.

They’re the perfect no-bake treat to pack for potlucks, school snacks, or on-the-go. Love the peanut butter and cereal combo? Try my peanut butter cornflake cookies and avalanche cookie recipe.

Ingredient Notes

Butter, mini marshmallows, creamy peanut butter, and Rice Krispies cereal measured out on a countertop.

Find the full printable recipe with specific measurements below.

  • Salted butter: Using salted butter balances the sweetness. I love having that subtle salty and sweet effect. Unsalted butter works too if that’s what you prefer using.
  • Mini marshmallows: You’ll need 1-16 oz bag of mini marshmallows. This works out to about 9-10 cups. If you have regular marshmallows it works out to about 40 pieces.
  • Creamy peanut butter: The creamy texture is much easier to work with than the crunchy kind. I also prefer to use regular over natural, it holds much better because the oil doesn’t separate.
  • Rice Krispies cereal: Use about half the box or 6 cups of crispy rice cereal.

How to Make Peanut Butter Rice Krispie Treats

Melt the butter in a large pot over medium-low heat. Add 7 cups of the marshmallows and stir until they’re soft and melted. Then stir in 1/4 cup of the peanut butter until everything is smooth and combined.

Melted butter, marshmallows, and peanut butter stirred together in a large pot for peanut butter rice krispie treats.

Remove the pot from the heat and stir in the 6 cups of cereal with a rubber spatula, it gets sticky fast, and the spatula makes it much easier. Fold in the remaining 2-3 cups of marshmallows until the cereal is evenly coated.

Stirring Rice Krispies cereal and extra marshmallows into the peanut butter mixture in a large pot.

Microwave the remaining 1/4 cup peanut butter in a small bowl for about 15 seconds. Drizzle it over the cereal mixture and gently stir, you want visible peanut butter swirls throughout, not fully mixed in.

Drizzling melted peanut butter over Rice Krispies cereal mixture to create peanut butter swirls.

Transfer the mixture to your prepared 9×9 dish and press it into an even layer with a buttered spatula or a piece of wax paper. Let it cool completely to room temperature before cutting into squares.

Peanut butter rice krispie treats sliced into square on countertop.

Recipe Tips

  • Make sure to grease your dish. A prepared pan will help prevent this version of classic rice krispie treats from sticking. You could even line it with parchment paper.
  • Avoid hard treats. Your homemade peanut butter rice krispies treats will turn out hard if you turned the heat too high on the stove. Melt everything over medium-low heat.
  • An even surface. To avoid rice krispies sticking to your hand spray your hands with nonstick cooking spray or grease with butter, and use your fingertips to press down.
  • Add chocolate. For chocolate peanut butter rice krispie treats add chocolate chips or a layer of melted chocolate ganache on top like my soft and chewy Scotcheroos.
  • Crunchy peanut butter. You can also try this recipe with chunky peanut butter, a different nut butter, such as almond butter or cashew butter or another rice cereal.
  • Clean cuts. Use a plastic knife if you have one to cut them into squares. They glide right through each slice without anything sticking to them.
Stack of peanut butter rice krispie treats on a wire rack with a spoon peanut butter in front.

Need more peanut butter recipes? Try lunch lady bars, peanut butter fudge, no bake peanut butter bars or peanut butter M&M cookies!

More Easy Cereal Treats

Stack of peanut butter rice krispie treats on metal rack with extra peanut butter on a spoon.

Peanut Butter Rice Krispie Treats

5 from 7 votes
Recipe by: Jamielyn Nye
Prep Time: 5 minutes
Cook Time: 10 minutes
Cool Time: 30 minutes
Total Time: 45 minutes
Servings: 18
Gooey, sweet and chewy peanut butter rice krispie treats are as simple as the classic, but made with peanut butter and the perfect amount of rice cereal and marshmallows!
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Video

Equipment

Ingredients 

  • 5 Tablespoons salted butter
  • 1 (16-ounce) bag mini marshmallows , divided (about 9-10 cups)
  • ½ cup creamy peanut butter , divided
  • 6 cups Rice Krispies cereal (about 1/2 a box)

Instructions

  • Line a 9×9-inch baking dish with foil and grease with butter or spray with nonstick spray.
  • In a large saucepan, melt 5 Tablespoons salted butter over medium-low heat. Add 7 cups marshmallows and cook until softened. Stir in 1/4 cup peanut butter until completely melted.
  • Remove the pan from the heat and mix in 6 cups cereal and remaining 2 to 3 cups marshmallows until the cereal is evenly coated. 
  • In a small bowl, add the remaining 1/4 cup peanut butter. Microwave 15 seconds. Drizzle over the top of the cereal mixture and stir gently, keeping some thicker swirls of peanut butter visible.
  • Transfer to the baking dish. Using a spoon coated in butter or wax paper, evenly press the mixture down to make compact and create a level surface. 
  • Let cool. If possible, use a plastic knife to cut for easier cutting.

Last step: Please leave a comment and rating after you make the recipe.

Notes

Storage: The treats will keep in an airtight container up to 3 days. I add a piece of bread inside the container to keep them soft.
Freeze: Wrap individual pieces tightly in saran wrap or wax paper to prevent sticking. Place in a freezer bag and keep frozen for up to 3 months. Thaw to room temperature and enjoy!
 

Nutrition

Serving: 1square, Calories: 106kcal, Carbohydrates: 10g, Protein: 2g, Fat: 7g, Saturated Fat: 3g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 3g, Trans Fat: 0.1g, Cholesterol: 8mg, Sodium: 105mg, Potassium: 53mg, Fiber: 0.4g, Sugar: 2g, Vitamin A: 718IU, Vitamin C: 6mg, Calcium: 5mg, Iron: 3mg

Nutrition provided is an estimate. It will vary based on specific ingredients used.