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If you are looking for a fun, nostalgic treat with a nutritious twist, the High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe is an absolute must-try. These bars perfectly capture the childhood magic of classic peanut butter and jelly sandwiches while packing a satisfying protein punch. Crispy, chewy, and irresistibly flavorful, each bite delivers the perfect balance of sweet fruit jelly, creamy peanut butter, and a hint of vanilla—all elevated by an added boost of protein powder that makes them ideal as a snack or quick pick-me-up. Whether you want an energizing snack after a workout or a guilt-free dessert, this recipe is a guaranteed crowd-pleaser you’ll want to keep in your repertoire.

Ingredients You’ll Need
This High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe calls for simple, wholesome ingredients that come together effortlessly. Each one plays a special role—from the crisp rice cereal providing delightful crunch, to the peanut butter lending richness, and the protein powder boosting nutrition without sacrificing flavor.
- 4 cups crisp rice cereal: The foundation that adds satisfying crunch and lightness to every bite.
- 1.5 cups mini marshmallows: Help bind the bars together while adding a gooey sweetness.
- 0.25 cup unsalted butter: Adds smooth, creamy richness and helps melt the marshmallows perfectly.
- 0.25 cup creamy peanut butter: Blends in the base mixture, giving that classic nutty flavor and moisture.
- 0.5 teaspoon vanilla extract: Enhances all the flavors with a warm, aromatic touch.
- Pinch of salt: Balances sweetness and intensifies the nutty profile.
- 0.5 cup vanilla protein powder: The secret ingredient that turns this treat into a high-protein snack.
- 0.33 cup creamy peanut butter: Used again for the protein drizzle, ensuring every layer is packed with flavor.
- 2 tablespoons unsweetened almond milk: Adjusts the drizzle consistency, making it smooth and pourable.
- 2 tablespoons maple syrup or honey: Natural sweeteners that complement peanut butter’s richness in the drizzle.
- 0.33 cup fruit jelly or jam: The fruity, sweet highlight that brings that nostalgic peanut butter & jelly combo to life.
How to Make High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe
Step 1: Prepare Baking Pan
Create the perfect shape and make cleanup easier by lining an 8×8-inch square baking pan with parchment paper. Leave some overhang on the sides so you can lift out the bars easily once they’re set.
Step 2: Melt Base Mixture
Gently melt the unsalted butter and 0.25 cup of creamy peanut butter together in a large saucepan over low heat. Once smooth and combined, stir in the mini marshmallows and keep stirring until everything melts into a smooth, gooey mixture that’s ready to bind the cereal.
Step 3: Season Base
Take your melted mixture off the heat, then stir in the vanilla extract and a pinch of salt to enhance those rich, nutty flavors and provide depth.
Step 4: Combine Cereal
Pour in the crisp rice cereal and gently fold it into the marshmallow mixture. Make sure all the cereal is well-coated so every square has that perfect balance of soft and crunchy textures.
Step 5: Press Into Pan
Transfer the cereal mixture to the parchment-lined pan and use a spatula or clean hands to press it down firmly and evenly. This will help the bars hold together and create a smooth surface for the protein drizzle.
Step 6: Prepare Protein Drizzle
In a small bowl, whisk together 0.5 cup vanilla protein powder, 0.33 cup creamy peanut butter, 2 tablespoons almond milk, and 2 tablespoons maple syrup or honey. Adjust the almond milk quantity to get a smooth, pourable consistency that’s not too thick or too runny.
Step 7: Apply Protein Layer
Pour the protein drizzle evenly over the pressed cereal layer. This extra layer is where the high-protein magic happens, adding flavor and nutritional value in one easy step.
Step 8: Create Marbled Effect
Add small dollops of your favorite fruit jelly or jam on top of the drizzle, then use a knife or skewer to gently swirl the jelly and protein mixture together. This creates a beautiful marbled effect and perfectly melds the flavors.
Step 9: Chill
Place the pan in the refrigerator for at least one hour or until the bars are firmly set and easy to cut.
Step 10: Cut and Serve
Use the parchment paper overhang to lift the block out of the pan. Cut into 12 equal squares and get ready to enjoy the perfect combination of a nostalgic classic and a wholesome protein boost.
How to Serve High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe

Garnishes
If you want to add extra flair, sprinkle chopped peanuts on top for crunch or add a light dusting of powdered sugar to enhance the sweetness. Fresh berries on the side can also brighten up the presentation and complement the fruity jelly.
Side Dishes
Serve these bars with a cold glass of milk or a plant-based alternative to round out the snack. If you’re having them as part of a brunch or afternoon spread, pair with yogurt parfaits or fresh fruit bowls for a refreshing combo.
Creative Ways to Present
Try layering smaller portions inside clear jars or packing them in colorful lunchboxes for a fun and portable snack. You could also drizzle some melted dark chocolate on top for a decadent twist that still keeps the protein appeal intact.
Make Ahead and Storage
Storing Leftovers
Keep your leftover bars fresh by storing them in an airtight container at room temperature for up to three days. If your kitchen tends to be warm, the fridge is a great option to keep them firm and chewy longer without drying out.
Freezing
These bars freeze beautifully! Wrap individual squares in plastic wrap and place them in a freezer-safe container or bag for up to 2 months. When ready to enjoy, just thaw at room temperature or pop them in the fridge overnight.
Reheating
Because these bars are best enjoyed cool and firm, reheating is usually unnecessary. However, if you prefer them slightly softened, a quick 10-second zap in the microwave can do the trick—just be careful not to overheat and lose the chewy texture.
FAQs
Can I use a different type of protein powder?
Absolutely! While vanilla protein powder works wonderfully here to complement the peanut butter and jelly flavors, you can use whey, plant-based, or any protein powder you prefer. Just make sure the flavor and texture match your taste.
Is it possible to make these bars nut-free?
If you have a peanut allergy, try substituting the peanut butter with sunflower seed butter or almond butter if tolerated. Be sure to choose a protein powder and jelly without nut ingredients to keep things safe.
How do I prevent the bars from sticking to the pan?
Lining the baking pan with parchment paper with an overhang on the sides is key. This not only prevents sticking but also makes lifting out the bars after chilling a breeze—no messy scraping required.
Can I use regular-sized marshmallows instead of minis?
Yes, you can! Just be prepared to chop regular marshmallows into smaller pieces for easier melting and more even distribution throughout the mixture.
How long do these bars stay fresh?
Stored properly in an airtight container, these bars maintain their freshness and chewiness for about 3-4 days at room temperature, or up to a week if refrigerated.
Final Thoughts
So there you have it—an absolutely delightful and nourishing snack that shows you just how fun and easy high-protein treats can be. The High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe breathes new life into a childhood favorite with a healthy twist, making it perfect for any time you want something sweet, satisfying, and packed with protein. I can’t wait for you to try these bars and make them a staple in your snack lineup!
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High-Protein Peanut Butter & Jelly Rice Krispie Bars Recipe
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Total Time: 20 minutes + 1 hour chilling
- Yield: 12 bars
- Category: Snack
- Method: Stovetop
- Cuisine: American
- Diet: Low Fat
Description
These High-Protein PB&J Rice Krispie Bars are a delicious and nutritious twist on the classic treat, combining crisp rice cereal, melted marshmallows, and peanut butter with a protein-packed drizzle and a marbled fruit jelly topping. Perfect for a quick snack or post-workout boost, these bars deliver a delightful balance of sweet and savory flavors while providing extra protein to keep you energized.
Ingredients
Base Mixture
- 4 cups crisp rice cereal
- 1.5 cups mini marshmallows
- 0.25 cup unsalted butter
- 0.25 cup creamy peanut butter
- 0.5 teaspoon vanilla extract
- Pinch of salt
Protein Drizzle
- 0.5 cup vanilla protein powder
- 0.33 cup creamy peanut butter
- 2 tablespoons unsweetened almond milk
- 2 tablespoons maple syrup or honey
- 0.33 cup fruit jelly or jam
Instructions
- Prepare Baking Pan: Line an 8×8-inch square baking pan with parchment paper, leaving an overhang on the sides for easy removal later.
- Melt Base Mixture: In a large saucepan over low heat, melt together the unsalted butter and 0.25 cup creamy peanut butter. Add in the mini marshmallows and stir continuously until they are completely melted and the mixture is smooth. Remove the pan from heat.
- Season Base: Stir in the vanilla extract and a pinch of salt into the melted mixture to enhance the flavor.
- Combine Cereal: Add the crisp rice cereal to the melted mixture and gently fold until all the cereal is evenly coated.
- Press Into Pan: Transfer the coated cereal mixture into the prepared baking pan. Press firmly and evenly across the entire surface to create a compact layer.
- Prepare Protein Drizzle: In a small bowl, whisk together the vanilla protein powder, 0.33 cup creamy peanut butter, unsweetened almond milk, and maple syrup until smooth and pourable. Adjust the almond milk quantity if needed to achieve the desired consistency.
- Apply Protein Layer: Evenly drizzle the prepared protein mixture over the pressed cereal base layer in the pan.
- Create Marbled Effect: Spoon small dollops of fruit jelly or jam over the protein drizzle. Use a knife or skewer to gently swirl the jelly and protein mixture together, creating an attractive marbled effect.
- Chill: Place the pan in the refrigerator and chill for at least 1 hour or until the bars are completely set and firm.
- Cut and Serve: Using the parchment paper overhang, lift the bars out of the pan. Cut into 12 equal squares and serve.
Notes
- Use vanilla or fruit-flavored protein powder for added flavor variety.
- Maple syrup can be substituted with honey to suit your preference or dietary needs.
- For a nut-free version, replace peanut butter with sunflower seed butter and ensure the protein powder is nut-free.
- Press the cereal mixture firmly but not too hard to maintain a light texture.
- Ensure the bars are fully chilled before cutting to prevent crumbling.

