High-Protein PB&J Rice Krispie Bars

Featured in: Baking & Sweet Treats

These nostalgic crispy cereal bars combine the classic crunch of rice treats with a protein-packed upgrade. A creamy vanilla-peanut butter drizzle gets swirled with fruity jelly for that beloved PB&J flavor combination. Ready in just 20 minutes plus chilling time, they're perfect for meal prep, afternoon snacking, or post-workout recovery. Each bar delivers 7 grams of protein while maintaining that satisfying crunch and gooey sweetness you remember from childhood.

Updated on Mon, 09 Feb 2026 05:44:20 GMT
Chilled High-Protein PB&J Rice Krispie Bars cut into squares, showing a creamy peanut butter drizzle and vibrant berry jelly swirl on top. Pin it
Chilled High-Protein PB&J Rice Krispie Bars cut into squares, showing a creamy peanut butter drizzle and vibrant berry jelly swirl on top. | vectorbaker.com

A fun, nostalgic twist on classic Rice Krispie treats, these bars are packed with protein and layered with a creamy peanut butter drizzle and sweet jelly swirls for a delicious snack or post-workout treat. They offer the perfect balance of crunchy cereal, gooey marshmallows, and the timeless flavor combination of peanut butter and fruit jam.

Chilled High-Protein PB&J Rice Krispie Bars cut into squares, showing a creamy peanut butter drizzle and vibrant berry jelly swirl on top. Pin it
Chilled High-Protein PB&J Rice Krispie Bars cut into squares, showing a creamy peanut butter drizzle and vibrant berry jelly swirl on top. | vectorbaker.com

These High-Protein PB&J Rice Krispie Bars are not just for kids. By adding vanilla protein powder and a rich peanut butter drizzle, we've transformed a lunchbox staple into a functional snack that supports your fitness goals while satisfying your sweet tooth.

Ingredients

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  • 4 cups crisp rice cereal
  • 1 1/2 cups mini marshmallows
  • 1/4 cup unsalted butter
  • 1/4 cup creamy peanut butter
  • 1/2 teaspoon vanilla extract
  • Pinch of salt
  • 1/2 cup vanilla protein powder
  • 1/3 cup creamy peanut butter (for drizzle)
  • 2 tablespoons unsweetened almond milk (or milk of choice)
  • 2 tablespoons maple syrup or honey
  • 1/3 cup fruit jelly or jam (strawberry, raspberry, or grape)

Instructions

Step 1: Preparation
Line an 8x8-inch square baking pan with parchment paper, leaving overhang for easy removal.
Step 2: Melt Base
In a large saucepan over low heat, melt the butter and peanut butter together. Add marshmallows and stir until completely melted and smooth. Remove from heat and stir in vanilla and salt.
Step 3: Combine
Add the crisp rice cereal to the mixture and fold until evenly coated.
Step 4: Press
Press the mixture firmly and evenly into the prepared pan.
Step 5: Protein Layer
In a small bowl, whisk together protein powder, peanut butter, almond milk, and maple syrup until smooth and pourable. Adjust milk for consistency if needed.
Step 6: Drizzle
Drizzle the protein mixture evenly over the pressed cereal layer.
Step 7: Swirl
Spoon small dollops of jelly over the top. Use a knife or skewer to gently swirl the jelly and protein drizzle together for a marbled effect.
Step 8: Set
Chill in the refrigerator for at least 1 hour, or until set.
Step 9: Serve
Lift the bars out using the parchment overhang and cut into 12 squares.

Zusatztipps für die Zubereitung

When pressing the cereal mixture into the pan, use a piece of greased parchment paper or a wet spatula to prevent sticking. Be careful not to press too hard, or the bars may become too dense. Ensure the marshmallow mixture is melted over low heat to keep the texture soft and chewy.

Varianten und Anpassungen

For a nut-free version, substitute sunflower seed butter for peanut butter in both the base and the drizzle. You can use your favorite flavor of jelly or jam, such as strawberry or grape. For extra protein and a bit of crunch, try adding a handful of roasted peanuts to the cereal base.

Serviervorschläge

These bars are best served chilled to maintain the structure of the protein drizzle and jelly swirl. They can be stored in an airtight container in the refrigerator for up to one week, making them an excellent meal-prep snack for busy days.

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| vectorbaker.com

Whether you need a quick breakfast on the go or a satisfying treat after the gym, these High-Protein PB&J Rice Krispie Bars deliver nostalgic flavor with nutritional benefits. Simple to prepare and even better to eat, they are a must-try for any peanut butter and jelly lover.

Recipe FAQs

Can I make these bars nut-free?

Yes, substitute sunflower seed butter for the peanut butter in both the cereal base and protein drizzle. The flavor profile will change slightly but still provides a delicious nut-free alternative with the same creamy texture.

How should I store these bars?

Keep them in an airtight container in the refrigerator for up to one week. The chilling helps maintain the firm texture and keeps the protein drizzle from becoming too soft. They can also be frozen for longer storage.

Can I use different protein powders?

Absolutely. Vanilla whey or plant-based protein powder works best. Unflavored powder can be used with an extra tablespoon of maple syrup. Chocolate protein powder creates a chocolate-PB variation if you prefer that flavor combination.

What type of jelly works best?

Strawberry, raspberry, or grape jelly are classic choices that pair perfectly with peanut butter. Any fruit preserves or jam will work—choose your favorite flavor or use what you have on hand for a custom twist.

Why do I need to chill the bars before cutting?

Chilling allows the protein drizzle to set completely and helps the bars firm up for clean cutting. Room temperature bars can be sticky and difficult to slice neatly. One hour in the refrigerator ensures perfect squares every time.

Can I add mix-ins to the cereal base?

Yes, roasted peanuts, extra mini marshmallows, or even chocolate chips can be folded into the cereal mixture before pressing into the pan. Just keep in mind that additional mix-ins may affect the nutritional information.

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High-Protein PB&J Rice Krispie Bars

Nostalgic crispy cereal bars boosted with protein, peanut butter drizzle, and jelly swirls for a satisfying snack.

Time to prep
15 minutes
Time to cook
5 minutes
Overall time
20 minutes
Created by Jack Sanchez


Skill level Easy

Cuisine type American

Makes 12 Portions

Dietary details Meat-free

What you need

Cereal Base

01 4 cups crisp rice cereal
02 1.5 cups mini marshmallows
03 0.25 cup unsalted butter
04 0.25 cup creamy peanut butter
05 0.5 teaspoon vanilla extract
06 Pinch of salt

Protein Drizzle

01 0.5 cup vanilla protein powder
02 0.33 cup creamy peanut butter
03 2 tablespoons unsweetened almond milk
04 2 tablespoons maple syrup

Jelly Swirl

01 0.33 cup fruit jelly or jam

Directions

Step 01

Prepare Baking Pan: Line an 8x8-inch square baking pan with parchment paper, leaving overhang for easy removal.

Step 02

Melt Base Mixture: In a large saucepan over low heat, melt the butter and peanut butter together. Add marshmallows and stir until completely melted and smooth. Remove from heat and stir in vanilla extract and salt.

Step 03

Combine Cereal: Add the crisp rice cereal to the mixture and fold until evenly coated.

Step 04

Press into Pan: Press the mixture firmly and evenly into the prepared baking pan.

Step 05

Prepare Protein Drizzle: In a small bowl, whisk together protein powder, peanut butter, almond milk, and maple syrup until smooth and pourable. Adjust milk for consistency if needed.

Step 06

Apply Protein Layer: Drizzle the protein mixture evenly over the pressed cereal layer.

Step 07

Create Swirl Pattern: Spoon small dollops of jelly over the top. Use a knife or skewer to gently swirl the jelly and protein drizzle together for a marbled effect.

Step 08

Chill Bars: Chill in the refrigerator for at least 1 hour, or until set.

Step 09

Cut and Serve: Lift the bars out using the parchment overhang and cut into 12 equal squares.

Tools you'll need

  • 8x8-inch square baking pan
  • Parchment paper
  • Saucepan
  • Mixing bowls
  • Spatula
  • Whisk
  • Knife or skewer

Allergy advice

Always check each ingredient for allergens and talk to a healthcare pro if you’re unsure.
  • Contains peanuts and dairy including butter
  • Contains gluten if rice cereal is not gluten-free certified
  • Contains soy in some marshmallow brands
  • May contain tree nuts depending on protein powder selection

Nutrition info (per portion)

These values are estimates for your reference. They’re not a substitute for professional medical advice.
  • Calorie count: 175
  • Fat content: 7 grams
  • Carbohydrates: 22 grams
  • Proteins: 7 grams

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