High-Protein PB&J Rice Krispie Bars

Featured in: Snack & Starter Ideas

These crispy rice bars transform a childhood favorite into a protein-packed treat ready in 20 minutes. The cereal base gets a protein boost from the creamy peanut butter drizzle, while sweet jelly swirls add that classic PB&J flavor combination. Chill for one hour to set, then cut into 12 portable squares perfect for post-workout fuel or afternoon snacking.

Updated on Tue, 10 Feb 2026 22:36:35 GMT
High-Protein PB&J Rice Krispie Bars sit on a wooden board with a visible peanut butter drizzle and berry jelly swirls. Save to Pinterest
High-Protein PB&J Rice Krispie Bars sit on a wooden board with a visible peanut butter drizzle and berry jelly swirls. | metrochop.com

A fun, nostalgic twist on classic Rice Krispie treats, these High-Protein PB&J Rice Krispie Bars are packed with protein and layered with a creamy peanut butter drizzle and sweet jelly swirls. Whether you need a quick pick-me-up or a post-workout recovery snack, these bars offer the perfect balance of sweetness and crunch in every bite.

High-Protein PB&J Rice Krispie Bars sit on a wooden board with a visible peanut butter drizzle and berry jelly swirls. Save to Pinterest
High-Protein PB&J Rice Krispie Bars sit on a wooden board with a visible peanut butter drizzle and berry jelly swirls. | metrochop.com

These bars bring together the airy crunch of crisp rice cereal with a rich, protein-enhanced peanut butter layer and a marbled fruit jelly finish. With 175 calories per bar, they are an excellent alternative to store-bought protein bars, offering a homemade taste that appeals to both kids and adults.

Ingredients

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  • Cereal Base: 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.
  • Protein Drizzle: 1/2 cup vanilla protein powder, 1/3 cup creamy peanut butter, 2 tablespoons unsweetened almond milk (or milk of choice), 2 tablespoons maple syrup or honey.
  • Jelly Swirl: 1/3 cup fruit jelly or jam (strawberry, raspberry, or grape).

Instructions

Step 1
Line an 8x8-inch square baking pan with parchment paper, leaving overhang for easy removal.
Step 2
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
Add the crisp rice cereal to the mixture and fold until evenly coated.
Step 4
Press the mixture firmly and evenly into the prepared pan.
Step 5
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 the protein mixture evenly over the pressed cereal layer.
Step 7
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
Chill in the refrigerator for at least 1 hour, or until set.
Step 9
Lift the bars out using the parchment overhang and cut into 12 squares.

Zusatztipps für die Zubereitung

To ensure the bars are easy to slice, make sure to chill them for the full hour. Storing the bars in an airtight container in the refrigerator will keep them fresh and maintain their texture for up to one week.

Varianten und Anpassungen

For a nut-free version, substitute sunflower seed butter for the peanut butter. You can also increase the protein and texture by adding a handful of roasted peanuts to the cereal base, or use your favorite flavor of jam—strawberry, raspberry, and grape all work beautifully.

Serviervorschläge

These bars are perfect for a post-workout treat or as a kid-friendly snack in a lunchbox. They pair wonderfully with a glass of cold milk or a cup of coffee for a mid-afternoon energy boost.

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| metrochop.com

Satisfying, sweet, and simple to make, these High-Protein PB&J Rice Krispie Bars are a fantastic way to upgrade a childhood classic into a nutritious modern snack.

Recipe FAQ

How long do these bars keep?

Store in an airtight container in the refrigerator for up to one week. The chilling time helps them maintain their shape and texture.

Can I make these 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 deliver creamy texture.

What type of protein powder works best?

Vanilla whey or plant-based protein powder blends smoothly into the drizzle. Avoid unflavored varieties as they may affect the overall taste balance.

Can I use different jelly flavors?

Absolutely. Strawberry, raspberry, and grape are classic choices, but any fruit jam or preserve works. Adjust the sweetness level if using particularly sweet varieties.

Do I need to refrigerate these bars?

Refrigeration helps the protein drizzle and jelly swirl set properly. Chill for at least one hour before cutting. Room temperature storage is fine after they're fully set, but refrigeration extends freshness.

Can I add extra protein?

Stir a handful of roasted peanuts into the cereal base before pressing into the pan for additional protein and crunch. You can also increase the protein powder slightly in the drizzle, adjusting liquid as needed.

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High-Protein PB&J Rice Krispie Bars

Nostalgic crispy rice bars layered with protein peanut butter drizzle and fruit jelly swirls for a satisfying high-protein snack.

Prep Time
15 minutes
Bake/Cook Time
5 minutes
Time Needed
20 minutes
Recipe By Elizabeth Perry


Skill Level Easy

Cuisine American

Makes 12 Portions

Dietary Needs Meat-Free

What You'll 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 or honey

Jelly Swirl

01 0.33 cup fruit jelly or jam

How-To Steps

Step 01

Prepare Pan: Line an 8x8-inch square baking pan with parchment paper, leaving overhang on all sides 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 with Cereal: Add the crisp rice cereal to the mixture and fold until evenly coated throughout.

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 quantity for desired consistency.

Step 06

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

Step 07

Create Marbled Effect: 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: Chill in the refrigerator for at least 1 hour, or until completely 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
  • Large saucepan
  • Mixing bowls
  • Spatula
  • Whisk
  • Knife or skewer

Allergy Notes

Always check each ingredient for allergens and reach out to a healthcare provider if you're uncertain.
  • Contains peanuts
  • Contains dairy products
  • May contain gluten if rice cereal is not certified gluten-free
  • May contain soy depending on marshmallow brand
  • May contain tree nuts depending on protein powder selection

Nutrition Details (per portion)

These details are for informational purposes and aren't a substitute for professional medical guidance.
  • Energy: 175
  • Fats: 7 g
  • Carbohydrates: 22 g
  • Proteins: 7 g

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