These Protein Rice Krispie Treats are a fun twist on the classic snack! Using crunchy rice cereal and protein powder, they give you a tasty boost of energy.
They’re quick to make, and who doesn’t love a chewy, sweet treat? I like to pack a few for an afternoon snack — they keep me going and are way better than a plain protein bar!
Key Ingredients & Substitutions
Crispy Rice Cereal: Classic Rice Krispies work great, but you can use puffed rice, brown rice cereal, or even gluten-free options. They all bring that satisfying crunch!
Mini Marshmallows: If you can’t find mini marshmallows, you can cut regular marshmallows into smaller pieces. If you’re vegan, look for marshmallows made with plant-based ingredients.
Protein Powder: I love using vanilla-flavored protein powder for that extra taste boost, but unflavored works too. You could substitute protein powder with ground oats or almond flour if you need an alternative.
Butter: For a dairy-free option, use coconut oil or a plant-based butter. They add a nice flavor while keeping the texture just right.
Sprinkles: These are optional, but who can resist sprinkles? Use any color you like, or leave them out for a more classic look.
How Do I Get the Right Texture for My Rice Krispie Treats?
The texture hinges on how well you mix everything together. Here are my tips:
- Melt the butter and marshmallows slowly and stir constantly to achieve a smooth consistency.
- When mixing in the cereal, be gentle to avoid crushing them. A folding motion works best.
- Press down firmly, but not too hard when packing the mixture into the dish. This helps them hold together without becoming too dense.
Allowing them to cool for a full hour is also key for getting that perfect chewy texture.

How to Make Protein Rice Krispie Treats
Ingredients You’ll Need:
- 6 cups crispy rice cereal (like Rice Krispies)
- 4 cups mini marshmallows
- 3 tbsp unsalted butter
- 1/2 cup vanilla or unflavored protein powder
- 1 tsp vanilla extract
- Optional: rainbow sprinkles for topping
How Much Time Will You Need?
This recipe will take about 15 minutes to prepare, plus about 1 hour for cooling. So, within about 1 hour and 15 minutes, you’ll have delicious protein-packed treats ready to enjoy!
Step-by-Step Instructions:
1. Prepare the Baking Dish:
Start by greasing a 9×13-inch baking dish with a little butter or line it with parchment paper, leaving some hanging over the edges. This will help you lift the treats out easily later on.
2. Melt the Butter:
In a large pot, place the unsalted butter and melt it over low heat. Stir it as it melts to prevent it from burning. You want it nice and smooth!
3. Add the Marshmallows:
Once the butter is melted, add in the mini marshmallows. Keep stirring constantly until they melt and blend into the butter, creating a smooth mixture.
4. Mix in the Protein Powder:
Take the pot off the heat and quickly stir in the protein powder and vanilla extract. Make sure it’s well mixed and no lumps remain.
5. Combine with Cereal:
Next, immediately add the crispy rice cereal into the pot. Gently fold it in using a spatula, ensuring all the cereal is covered with the marshmallow mixture. Be gentle to keep the cereal crunchy!
6. Transfer to the Dish:
Pour the mixture into your prepared baking dish. Use a greased spatula to evenly press it down into the dish without squishing it too hard.
7. Top with Sprinkles (Optional):
If you want to add some fun, sprinkle rainbow sprinkles on top and lightly press them into the mixture.
8. Cool and Set:
Let the treats cool completely at room temperature. This should take about 1 hour. Patience is key for that perfect chewy texture!
9. Cut the Treats:
Once they’re fully set, lift the treats out of the pan using the parchment overhang. Place them on a cutting board and cut into squares or rectangles—whatever shape you prefer.
10. Store:
Put any leftovers in an airtight container and store at room temperature for up to 3 days. They won’t last long, though—everyone will love these!
Enjoy your Protein Rice Krispie Treats as a quick snack or a tasty post-workout pick-me-up!
Can I Use Different Types of Protein Powder?
Absolutely! You can use any flavor of protein powder you like, such as chocolate or strawberry, for a unique twist. Just keep in mind that it may change the overall flavor of the treats.
How Can I Make These Treats Vegan?
To make vegan Protein Rice Krispie Treats, simply use a plant-based butter alternative and vegan marshmallows. There are many brands available that cater to a vegan diet.
What’s the Best Way to Store Leftovers?
Store any leftover treats in an airtight container at room temperature for up to 3 days. You can also refrigerate them if you prefer a firmer texture; just be sure they are well-wrapped to avoid drying out.
Can I Add Mix-Ins to My Treats?
Definitely! Feel free to mix in ingredients like chocolate chips, dried fruit, or nuts for extra flavor and nutrition. Just keep in mind to adjust the quantity of crispy rice cereal slightly to maintain the right consistency.
