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Sift » Blog » Cookies

Modified: Feb 21, 2025 by siftrva · This post may contain affiliate links.

Hagrid's Rock Cakes

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Chocolate Rice Krispie treats with Peanut Butter
"The rock cakes almost broke their teeth, but Harry and Ron pretended to be enjoying them as they told Hagrid all about their first lessons. Fang rested his head on Harry's Knee and drooled all over his robes."
- Harry Potter and the Philosopher's Stone

While reading the books to find the foods that I was going to make, very early in the first book I came across the rock cakes Hagrid provided to Harry and Ron. I thought the description was pretty funny (see above) and decided then and there to add it to the list. "What would one put in a rock cake?" I thought. Then it came to me, as if it were a vision: Chocolate Rice Krispie treats with Peanut Butter.

What do you need for Chocolate Rice Krispie treats with Peanut Butter aka Rock Cakes?

One of the best things about this recipe? It is not a ton of ingredients!

  1. 6 cups rice krispies (check the kind of use- I get the Wegmans brand which are labelled as gluten free).
  2. 16 oz mini marshmallows
  3. 1 cup chocolate chips (I use milk chocolate, but, you can do semi-sweet, dark, or a mix!)
  4. 1 teaspoon vanilla
  5. 5 tablespoon crunchy peanut butter
  6. 6 tablespoon unsalted butter
  7. Graham crackers (optional)
  8. Grey Food Coloring (optional- to make them look like rocks)

This recipe is a 1:1 as I try to do with most of my recipes, so, if you want to add the graham crackers for that extra crunch, do regular if gluten free isn't your thing and if you are like me and not on the gluten train, then the gluten free ones will suffice!

How do you make your rock cakes?

I love this so much because it is a 1 pot recipe. So simple.

  1. Melt your butter in a pot on medium heat.
  2. Once your butter is fully melted add your marshmallows to the pot and allow them to melt. Stir them with the butter. They will be shiny and smooth when they are ready.
  3. Add the peanut butter and vanilla once the marshmallows are fully melted. If you want to make them look like rocks, now is the time to add your food coloring.
  4. Remove from the heat and add your rice krispies and the chocolate chips, along with the optional graham crackers.
  5. Stir it all up until they are fully melted together.
  6. Allow it to sit in the pot for a few mins and them remove small bits at a time and form them with your hands so they are the shape of rocks.

Why should you make these?

Like Harry and Ron, you don't want to insult Hagrid, aka Rubeus Hagrid Keeper of keys and grounds at Hogwarts School of Witchcraft and Wizardry. These pack such a delicious punch and they are so simple to make. As always, I hope you love them and make them. When you do, leave a rating in the comments and tell me how much you liked em!

Looking for other Harry Potter Recipes? I've got you covered.

Butterbeer click here
Polyjuice Potion click here
Black Lake Brownies click here
Pumpkin Juice click here
Treacle Tart click here

Always,
L

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Hagrid Rock Caked aka chocolate rice krispie treats with peanut butter on parchment paper

Hagrid's Rock Cakes


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5 from 1 review

  • Author: Sift | Gluten Free
  • Total Time: 10 minutes
  • Yield: 20 1x
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Description

Hagrid's Rock Cakes: Chocolate Rice Krispie treats with Peanut Butter. This fun take on rice krispie treats are sweet, chocolatey and full of peanut butter.


Ingredients

Units Scale
  • 6 cups rice krispies (check the kind of use- I get the Wegmans brand which are labelled as gluten free.)
  • 16 oz mini marshmallows
  • 1 cup chocolate chips (I use milk chocolate, but, you can do semi-sweet, dark, or a mix!)
  • 1 tsp vanilla
  • 5 tbsp crunchy peanut butter
  • 6 tbsp unsalted butter
  • Graham crackers (optional)
  • Grey Food Coloring (optional- to make them look like rocks)


Instructions

  1. Melt your butter in a pot on medium heat.
  2. Once your butter is fully melted add your marshmallows to the pot and allow them to melt. Stir them with the butter. They will be shiny and smooth when they are ready.
  3. Add the peanut butter and vanilla once the marshmallows are fully melted. If you want to make them look like rocks, now is the time to add your food coloring.
  4. Remove from the heat and add your rice krispies and the chocolate chips, along with the optional graham crackers.
  5. Stir it all up until they are fully melted together.
  6. Allow it to sit in the pot for a few mins and them remove small bits at a time and form them with your hands so they are the shape of rocks.
  • Prep Time: 5 minutes
  • Cook Time: 5 minutes
  • Category: Dessert
  • Cuisine: Dessert

Nutrition

  • Calories: 188
  • Sugar: 18
  • Sodium: 84
  • Fat: 7
  • Saturated Fat: 4
  • Carbohydrates: 30
  • Fiber: 1
  • Protein: 2
  • Cholesterol: 11

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About siftrva

Reader Interactions

Comments

  1. Amanda Gajdosik says

    July 06, 2020 at 2:04 pm

    I loooooooove them!

    Reply
    • siftrva says

      July 06, 2020 at 2:05 pm

      Thank you thank you <3

      Reply
  2. Dianna Wilson says

    July 06, 2020 at 2:33 pm

    At least these shouldn't break any teeth!

    Reply
    • siftrva says

      July 06, 2020 at 3:15 pm

      They are chewy and delicious- they definitely won't!

      Reply

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